Vulnerability-Lookup

CVE-2026-41176 (GCVE-0-2026-41176)

Vulnerability from cvelistv5 – Published: 2026-04-22 23:57 – Updated: 2026-07-15 00:59

Previdian

Title

Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution

Summary

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. The RC endpoint `options/set` is exposed without `AuthRequired: true`, but it can mutate global runtime configuration, including the RC option block itself. Starting in version 1.45.0 and prior to version 1.73.5, an unauthenticated attacker can set `rc.NoAuth=true`, which disables the authorization gate for many RC methods registered with `AuthRequired: true` on reachable RC servers that are started without global HTTP authentication. This can lead to unauthorized access to sensitive administrative functionality, including configuration and operational RC methods. Version 1.73.5 patches the issue.

Severity

9.2 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-24 00:00 UTC

CWE

CWE-306 - Missing Authentication for Critical Function
CWE-15 - External Control of System or Configuration Setting

Assigner

GitHub_M mitre root Scorecard

References

6 references

URL	Tags
https://github.com/rclone/rclone/security/advisor…	x_refsource_CONFIRM
https://github.com/rclone/rclone/blob/bf55d5e6d37…	x_refsource_MISC
https://github.com/rclone/rclone/blob/bf55d5e6d37…	x_refsource_MISC
https://access.redhat.com/security/cve/CVE-2026-41176	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2460989	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

3 products

Vendor	Product	Version
rclone	rclone	Affected: >= 1.45.0, < 1.73.5
Red Hat	OpenShift API for Data Protection	cpe:/a:redhat:openshift_api_data_protection:1
Red Hat	Red Hat Advanced Cluster Management for Kubernetes 2	cpe:/a:redhat:acm:2

Previdian

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: bee07377-b5c6-4d42-b046-bad7fca6a6c1

Vulnerability ID: CVE-2026-41176

Status: Confirmed

Status Updated: 2026-06-03 02:00 CEST

Exploited: Yes

Timestamps

First Seen: 2026-06-03

Asserted: 2026-06-03

Scope

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details

Feed	Previdian (previdian.com)
Title	Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution
Cve Id	CVE-2026-41176
Vendor	Rclone
Ghsa Id	GHSA-25QR-6MPR-F7QX
Product	rclone
Added Date	2026-06-03T00:00:00.000Z
Cvss Score	9.2
Epss Score	0.03216
Previous Ids
Cvss Severity	CRITICAL
Virtual Patch	False
Cvss Estimated	False
Epss Percentile	0.87765
Used In Malware	unknown
Vulnerability Id	CVE-2026-41176
Ahead Of Cisa Kev	None
Not Yet In Cisa Kev	True

References

Created: 2026-10-02 09:09 CEST | Updated: 2026-10-02 09:09 CEST

Show details on NVD website

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      "cve": "CVE-2026-41176",
      "id": "CVE-2026-41176",
      "initial_release_date": "2026-04-22T23:57:54.075000+00:00",
      "product_status:known_not_affected": "4",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "github.com/rclone/rclone: Rclone: Unauthorized access to administrative functions through unauthenticated Remote Control endpoint.",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41176.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-41176",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-04-23T14:36:39.313605Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-04-23T14:36:04.300Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "exploit"
                ],
                "url": "https://github.com/rclone/rclone/security/advisories/GHSA-25qr-6mpr-f7qx"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "rclone",
              "vendor": "rclone",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003e= 1.45.0, \u003c 1.73.5"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Rclone is a command-line program to sync files and directories to and from different cloud storage providers. The RC endpoint `options/set` is exposed without `AuthRequired: true`, but it can mutate global runtime configuration, including the RC option block itself. Starting in version 1.45.0 and prior to version 1.73.5, an unauthenticated attacker can set `rc.NoAuth=true`, which disables the authorization gate for many RC methods registered with `AuthRequired: true` on reachable RC servers that are started without global HTTP authentication. This can lead to unauthorized access to sensitive administrative functionality, including configuration and operational RC methods. Version 1.73.5 patches the issue."
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "attackComplexity": "LOW",
                "attackRequirements": "PRESENT",
                "attackVector": "NETWORK",
                "baseScore": 9.2,
                "baseSeverity": "CRITICAL",
                "privilegesRequired": "NONE",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                "version": "4.0",
                "vulnAvailabilityImpact": "HIGH",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-306",
                  "description": "CWE-306: Missing Authentication for Critical Function",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-04-22T23:57:54.075Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/rclone/rclone/security/advisories/GHSA-25qr-6mpr-f7qx",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/rclone/rclone/security/advisories/GHSA-25qr-6mpr-f7qx"
            },
            {
              "name": "https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/config.go",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/config.go"
            },
            {
              "name": "https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/rcserver/rcserver.go",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/rcserver/rcserver.go"
            }
          ],
          "source": {
            "advisory": "GHSA-25qr-6mpr-f7qx",
            "discovery": "UNKNOWN"
          },
          "title": "Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-41176",
        "datePublished": "2026-04-22T23:57:54.075Z",
        "dateReserved": "2026-04-17T16:34:45.526Z",
        "dateUpdated": "2026-04-28T03:55:19.022Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

bit-rclone-2026-41176

Vulnerability from bitnami_vulndb

Published

2026-04-24 08:51

Modified

2026-09-08 08:34

Summary

Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution

Details

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. The RC endpoint options/set is exposed without AuthRequired: true, but it can mutate global runtime configuration, including the RC option block itself. Starting in version 1.45.0 and prior to version 1.73.5, an unauthenticated attacker can set rc.NoAuth=true, which disables the authorization gate for many RC methods registered with AuthRequired: true on reachable RC servers that are started without global HTTP authentication. This can lead to unauthorized access to sensitive administrative functionality, including configuration and operational RC methods. Version 1.73.5 patches the issue.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "rclone",
        "purl": "pkg:bitnami/rclone"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.45.0"
            },
            {
              "fixed": "1.73.5"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "type": "CVSS_V4"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-41176"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:rclone:rclone:*:*:*:*:*:go:*:*"
    ],
    "severity": "Critical"
  },
  "details": "Rclone is a command-line program to sync files and directories to and from different cloud storage providers. The RC endpoint `options/set` is exposed without `AuthRequired: true`, but it can mutate global runtime configuration, including the RC option block itself. Starting in version 1.45.0 and prior to version 1.73.5, an unauthenticated attacker can set `rc.NoAuth=true`, which disables the authorization gate for many RC methods registered with `AuthRequired: true` on reachable RC servers that are started without global HTTP authentication. This can lead to unauthorized access to sensitive administrative functionality, including configuration and operational RC methods. Version 1.73.5 patches the issue.",
  "id": "BIT-rclone-2026-41176",
  "modified": "2026-09-08T08:34:36.952Z",
  "published": "2026-04-24T08:51:07.745Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/config.go"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/rcserver/rcserver.go"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/rclone/rclone/security/advisories/GHSA-25qr-6mpr-f7qx"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41176"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-41176"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2460989"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41176.json"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution"
}

EUVD-2026-337258

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 07:52

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

JSON

To clipboard

{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T07:52:22.903066+00:00",
  "id": "EUVD-2026-337258"
}

FKIE_CVE-2026-41176

Vulnerability from fkie_nvd - Published: 2026-04-23 00:16 - Updated: 2026-07-15 02:21

Previdian

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/config.go	Product
security-advisories@github.com	https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/rcserver/rcserver.go	Product
security-advisories@github.com	https://github.com/rclone/rclone/security/advisories/GHSA-25qr-6mpr-f7qx	Exploit, Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/security/cve/CVE-2026-41176
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://bugzilla.redhat.com/show_bug.cgi?id=2460989
134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/rclone/rclone/security/advisories/GHSA-25qr-6mpr-f7qx	Exploit, Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41176.json

Impacted products

	Vendor	Product	Version
	rclone	rclone	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "rclone",
          "vendor": "rclone",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.45.0, \u003c 1.73.5"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    },
    {
      "affectedData": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_api_data_protection:1"
          ],
          "defaultStatus": "unaffected",
          "packageName": "oadp/oadp-mustgather-rhel9",
          "product": "OpenShift API for Data Protection",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_api_data_protection:1"
          ],
          "defaultStatus": "unaffected",
          "packageName": "oadp/oadp-velero-restic-restore-helper-rhel9",
          "product": "OpenShift API for Data Protection",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_api_data_protection:1"
          ],
          "defaultStatus": "unaffected",
          "packageName": "oadp/oadp-velero-rhel9",
          "product": "OpenShift API for Data Protection",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:acm:2"
          ],
          "defaultStatus": "unaffected",
          "packageName": "rhacm2/volsync-rhel9",
          "product": "Red Hat Advanced Cluster Management for Kubernetes 2",
          "vendor": "Red Hat"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "142E8906-BCC7-4EC4-A38C-691490968E44",
              "versionEndExcluding": "1.73.5",
              "versionStartIncluding": "1.45",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Rclone is a command-line program to sync files and directories to and from different cloud storage providers. The RC endpoint `options/set` is exposed without `AuthRequired: true`, but it can mutate global runtime configuration, including the RC option block itself. Starting in version 1.45.0 and prior to version 1.73.5, an unauthenticated attacker can set `rc.NoAuth=true`, which disables the authorization gate for many RC methods registered with `AuthRequired: true` on reachable RC servers that are started without global HTTP authentication. This can lead to unauthorized access to sensitive administrative functionality, including configuration and operational RC methods. Version 1.73.5 patches the issue."
    }
  ],
  "id": "CVE-2026-41176",
  "lastModified": "2026-07-15T02:21:13.883",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
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        "cvssData": {
          "attackComplexity": "LOW",
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          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
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          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.2,
          "baseSeverity": "CRITICAL",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
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              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-24T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
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  },
  "published": "2026-04-23T00:16:45.800",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Product"
      ],
      "url": "https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/config.go"
    },
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      "tags": [
        "Product"
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      "url": "https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/rcserver/rcserver.go"
    },
    {
      "source": "security-advisories@github.com",
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        "Vendor Advisory"
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      "url": "https://github.com/rclone/rclone/security/advisories/GHSA-25qr-6mpr-f7qx"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
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      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
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    },
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Vendor Advisory"
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      "url": "https://github.com/rclone/rclone/security/advisories/GHSA-25qr-6mpr-f7qx"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41176.json"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-15"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "type": "Secondary"
    }
  ]
}

GHSA-25QR-6MPR-F7QX

Vulnerability from github – Published: 2026-04-22 14:44 – Updated: 2026-06-08 20:09

Summary

Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution

Details

Summary

The RC endpoint options/set is exposed without AuthRequired: true, but it can mutate global runtime configuration, including the RC option block itself. An unauthenticated attacker can set rc.NoAuth=true, which disables the authorization gate for many RC methods registered with AuthRequired: true on reachable RC servers that are started without global HTTP authentication. This can lead to unauthorized access to sensitive administrative functionality, including configuration and operational RC methods.

Preconditions

Preconditions for this vulnerability are:

The rclone remote control API must be enabled, either by the --rc flag or by running the rclone rcd server
The remote control API must be reachable by the attacker - by default rclone only serves the rc to localhost unless the --rc-addr flag is in use
The rc must have been deployed without global RC HTTP authentication - so not using --rc-user/--rc-pass/--rc-htpasswd/etc

Details

The root cause is present from v1.45 onward. Some higher-impact exploitation paths became available in later releases as additional RC functionality was introduced.

The issue is caused by two properties of the RC implementation:

options/set is exposed without AuthRequired: true
the RC server enforces authorization for AuthRequired calls using the mutable runtime value s.opt.NoAuth

Relevant code paths:

fs/rc/config.go
registers options/set without AuthRequired: true
rcOptionsSet reshapes attacker-controlled input into global option blocks
fs/rc/rcserver/rcserver.go
request handling checks:
- if !s.opt.NoAuth && call.AuthRequired && !s.server.UsingAuth()
once rc.NoAuth is changed to true, later AuthRequired methods become callable without credentials

This creates a runtime auth-bypass primitive on the RC interface.

After setting rc.NoAuth=true, previously protected administrative methods become callable, including configuration and operational endpoints such as:

config/listremotes
config/dump
config/get
operations/list
operations/copyfile
core/command

Relevant code for the second-stage command execution path:

fs/metadata.go
metadataMapper() uses exec.Command(...)
fs/operations/rc.go
operations/copyfile is normally AuthRequired: true
once rc.NoAuth=true, it becomes reachable without credentials

This was validating using the following: - current master as of 2026-04-14: bf55d5e6d37fd86164a87782191f9e1ffcaafa82 - latest public release tested locally: v1.73.4

The issue was also verified on a public amd64 Ubuntu host controlled by the tester, using direct host execution (not containerized PoC execution).

PoC

Minimal reproduction

Start a vulnerable server:

rclone rcd --rc-addr 127.0.0.1:5572

No --rc-user, no --rc-pass, no --rc-htpasswd.

First confirm that a protected RC method is initially blocked:

curl -sS -X POST http://127.0.0.1:5572/config/listremotes \
  -H 'Content-Type: application/json' \
  --data '{}'

Expected result: HTTP 403.

Use unauthenticated options/set to disable the auth gate:

curl -sS -X POST http://127.0.0.1:5572/options/set \
  -H 'Content-Type: application/json' \
  --data '{"rc":{"NoAuth":true}}'

Expected result: HTTP 200 {}

Then call the same protected method again without credentials:

curl -sS -X POST http://127.0.0.1:5572/config/listremotes \
  -H 'Content-Type: application/json' \
  --data '{}'

Expected result: HTTP 200 with a JSON response such as:

{"remotes":[]}

Testing performed

This was successfully reproduced: - on the tester's ocal test environment - on a public amd64 Ubuntu host controlled by the tester

Using the public host, the following was confirmed:

unauthenticated options/set successfully set rc.NoAuth=true
previously protected RC methods became callable without credentials
the issue was reproducible through direct host execution

Impact

This is an authorization bypass on the RC administrative interface.

It can allow an unauthenticated network attacker, on a reachable RC deployment without global HTTP authentication, to disable the intended auth boundary for protected RC methods and gain access to sensitive configuration and operational functionality.

Depending on the enabled RC surface and runtime configuration, this can further enable higher-impact outcomes such as local file read, credential/config disclosure, filesystem enumeration, and command execution.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.2 (Critical)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/rclone/rclone"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.45.0"
            },
            {
              "fixed": "1.73.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-41176"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-22T14:44:13Z",
    "nvd_published_at": "2026-04-23T00:16:45Z",
    "severity": "CRITICAL"
  },
  "details": "### Summary\nThe RC endpoint `options/set` is exposed without `AuthRequired: true`, but it can mutate global runtime configuration, including the RC option block itself. An unauthenticated attacker can set `rc.NoAuth=true`, which disables the authorization gate for many RC methods registered with `AuthRequired: true` on reachable RC servers that are started without global HTTP authentication. This can lead to unauthorized access to sensitive administrative functionality, including configuration and operational RC methods.\n\n### Preconditions\n\nPreconditions for this vulnerability are:\n\n- The rclone remote control API **must** be enabled, either by the `--rc` flag or by running the `rclone rcd` server\n- The remote control API **must** be reachable by the attacker - by default rclone only serves the rc to localhost unless the `--rc-addr` flag is in use\n- The rc must have been deployed **without** global RC HTTP authentication - so not using `--rc-user`/`--rc-pass`/`--rc-htpasswd`/etc\n\n### Details\nThe root cause is present from v1.45 onward. Some higher-impact exploitation paths became available in later releases as additional RC functionality was introduced.\n\nThe issue is caused by two properties of the RC implementation:\n\n1. `options/set` is exposed without `AuthRequired: true`\n2. the RC server enforces authorization for `AuthRequired` calls using the mutable runtime value `s.opt.NoAuth`\n\nRelevant code paths:\n\n- [`fs/rc/config.go`](https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/config.go)\n  - registers `options/set` without `AuthRequired: true`\n  - `rcOptionsSet` reshapes attacker-controlled input into global option blocks\n\n- [`fs/rc/rcserver/rcserver.go`](https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/rcserver/rcserver.go)\n  - request handling checks:\n    - `if !s.opt.NoAuth \u0026\u0026 call.AuthRequired \u0026\u0026 !s.server.UsingAuth()`\n  - once `rc.NoAuth` is changed to `true`, later `AuthRequired` methods become callable without credentials\n\nThis creates a runtime auth-bypass primitive on the RC interface.\n\nAfter setting `rc.NoAuth=true`, previously protected administrative methods become callable, including configuration and operational endpoints such as:\n\n- `config/listremotes`\n- `config/dump`\n- `config/get`\n- `operations/list`\n- `operations/copyfile`\n- `core/command`\n\nRelevant code for the second-stage command execution path:\n\n- [`fs/metadata.go`](https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/metadata.go)\n  - `metadataMapper()` uses `exec.Command(...)`\n\n- [`fs/operations/rc.go`](https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/operations/rc.go)\n  - `operations/copyfile` is normally `AuthRequired: true`\n  - once `rc.NoAuth=true`, it becomes reachable without credentials\n\nThis was validating using the following:\n- current `master` as of 2026-04-14: `bf55d5e6d37fd86164a87782191f9e1ffcaafa82`\n- latest public release tested locally: `v1.73.4`\n\nThe issue was also verified on a public amd64 Ubuntu host controlled by the tester, using direct host execution (not containerized PoC execution).\n\n### PoC\n#### Minimal reproduction\nStart a vulnerable server:\n\n```bash\nrclone rcd --rc-addr 127.0.0.1:5572\n```\n\nNo `--rc-user`, no `--rc-pass`, no `--rc-htpasswd`.\n\nFirst confirm that a protected RC method is initially blocked:\n\n```bash\ncurl -sS -X POST http://127.0.0.1:5572/config/listremotes \\\n  -H \u0027Content-Type: application/json\u0027 \\\n  --data \u0027{}\u0027\n```\n\nExpected result: HTTP 403.\n\nUse unauthenticated `options/set` to disable the auth gate:\n\n```bash\ncurl -sS -X POST http://127.0.0.1:5572/options/set \\\n  -H \u0027Content-Type: application/json\u0027 \\\n  --data \u0027{\"rc\":{\"NoAuth\":true}}\u0027\n```\n\nExpected result: HTTP 200 `{}`\n\nThen call the same protected method again without credentials:\n\n```bash\ncurl -sS -X POST http://127.0.0.1:5572/config/listremotes \\\n  -H \u0027Content-Type: application/json\u0027 \\\n  --data \u0027{}\u0027\n```\n\nExpected result: HTTP 200 with a JSON response such as:\n\n```json\n{\"remotes\":[]}\n```\n\n#### Testing performed\nThis was successfully reproduced:\n- on the tester\u0027s ocal test environment\n- on a public amd64 Ubuntu host controlled by the tester\n\nUsing the public host, the following was confirmed:\n\n- unauthenticated `options/set` successfully set `rc.NoAuth=true`\n- previously protected RC methods became callable without credentials\n- the issue was reproducible through direct host execution\n\n### Impact\nThis is an authorization bypass on the RC administrative interface.\n\nIt can allow an unauthenticated network attacker, on a reachable RC deployment without global HTTP authentication, to disable the intended auth boundary for protected RC methods and gain access to sensitive configuration and operational functionality.\n\nDepending on the enabled RC surface and runtime configuration, this can further enable higher-impact outcomes such as local file read, credential/config disclosure, filesystem enumeration, and command execution.",
  "id": "GHSA-25qr-6mpr-f7qx",
  "modified": "2026-06-08T20:09:49Z",
  "published": "2026-04-22T14:44:13Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rclone/rclone/security/advisories/GHSA-25qr-6mpr-f7qx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41176"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rclone/rclone"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/config.go"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/rcserver/rcserver.go"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution"
}

OPENSUSE-SU-2026:10584-1

Vulnerability from csaf_opensuse - Published: 2026-04-20 00:00 - Updated: 2026-09-17 17:01

Summary

rclone-1.73.5-1.1 on GA media

Severity

Moderate

Scope

2 vulnerabilities in this advisory, including CVE-2026-41176.

CVE-2026-41176

9.8 (Critical)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Recommended: 12 products

Open the full advisory

OPENSUSE-SU-2026:20620-1

Vulnerability from csaf_opensuse - Published: 2026-04-23 16:22 - Updated: 2026-10-02 17:49

Summary

Security update for rclone

Severity

Critical

Scope

14 vulnerabilities in this advisory, including CVE-2026-41176.

CVE-2026-41176

9.8 (Critical)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Recommended: 5 products

Open the full advisory

OPENSUSE-SU-2026:21436-1

Vulnerability from csaf_opensuse - Published: 2026-07-22 20:54 - Updated: 2026-09-17 17:40

Summary

Security update for rclone

Severity

Critical

Scope

37 vulnerabilities in this advisory, including CVE-2026-41176.

CVE-2026-41176

9.8 (Critical)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Recommended: 5 products

Open the full advisory

UBUNTU-CVE-2026-41176 (CVE-2026-41176)

Vulnerability from osv_ubuntu – Published: 2026-04-23 00:16 – Updated: 2026-06-30 16:20 – Source website

Previdian

Details

Severity

9.2 (Critical)


                    
                      CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

9.8 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.8 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-41176	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-41176	REPORT
	https://github.com/rclone/rclone/security/advisor…	REPORT
	https://ubuntu.com/security/notices/USN-8299-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "golang-github-rclone-rclone-dev",
            "binary_version": "1.50.2-2ubuntu0.2+esm1"
          },
          {
            "binary_name": "rclone",
            "binary_version": "1.50.2-2ubuntu0.2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "rclone",
        "purl": "pkg:deb/ubuntu/rclone@1.50.2-2ubuntu0.2+esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.50.2-2ubuntu0.2+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.47.0+ex1-6",
        "1.47.0+ex1-7",
        "1.49.5-2",
        "1.49.5-3",
        "1.50.2-2",
        "1.50.2-2ubuntu0.1",
        "1.50.2-2ubuntu0.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "golang-github-rclone-rclone-dev",
            "binary_version": "1.53.3-4ubuntu1.22.04.4"
          },
          {
            "binary_name": "rclone",
            "binary_version": "1.53.3-4ubuntu1.22.04.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "rclone",
        "purl": "pkg:deb/ubuntu/rclone@1.53.3-4ubuntu1.22.04.4?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.53.3-4ubuntu1.22.04.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.53.3-1",
        "1.53.3-2",
        "1.53.3-4",
        "1.53.3-4ubuntu1",
        "1.53.3-4ubuntu1.22.04.1",
        "1.53.3-4ubuntu1.22.04.2",
        "1.53.3-4ubuntu1.22.04.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "golang-github-rclone-rclone-dev",
            "binary_version": "1.60.1+dfsg-3ubuntu0.24.04.5"
          },
          {
            "binary_name": "rclone",
            "binary_version": "1.60.1+dfsg-3ubuntu0.24.04.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "rclone",
        "purl": "pkg:deb/ubuntu/rclone@1.60.1+dfsg-3ubuntu0.24.04.5?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.60.1+dfsg-3ubuntu0.24.04.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.60.1+dfsg-2build1",
        "1.60.1+dfsg-3",
        "1.60.1+dfsg-3ubuntu0.24.04.1",
        "1.60.1+dfsg-3ubuntu0.24.04.2",
        "1.60.1+dfsg-3ubuntu0.24.04.3",
        "1.60.1+dfsg-3ubuntu0.24.04.4"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "golang-github-rclone-rclone-dev",
            "binary_version": "1.60.1+dfsg-4ubuntu2.1"
          },
          {
            "binary_name": "rclone",
            "binary_version": "1.60.1+dfsg-4ubuntu2.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "rclone",
        "purl": "pkg:deb/ubuntu/rclone@1.60.1+dfsg-4ubuntu2.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.60.1+dfsg-4ubuntu2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.60.1+dfsg-4",
        "1.60.1+dfsg-4ubuntu1",
        "1.60.1+dfsg-4ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "golang-github-rclone-rclone-dev",
            "binary_version": "1.60.1+dfsg-4ubuntu3.1"
          },
          {
            "binary_name": "rclone",
            "binary_version": "1.60.1+dfsg-4ubuntu3.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "rclone",
        "purl": "pkg:deb/ubuntu/rclone@1.60.1+dfsg-4ubuntu3.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.60.1+dfsg-4ubuntu3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.60.1+dfsg-4ubuntu2",
        "1.60.1+dfsg-4ubuntu3"
      ]
    }
  ],
  "aliases": [],
  "details": "Rclone is a command-line program to sync files and directories to and from different cloud storage providers. The RC endpoint `options/set` is exposed without `AuthRequired: true`, but it can mutate global runtime configuration, including the RC option block itself. Starting in version 1.45.0 and prior to version 1.73.5, an unauthenticated attacker can set `rc.NoAuth=true`, which disables the authorization gate for many RC methods registered with `AuthRequired: true` on reachable RC servers that are started without global HTTP authentication. This can lead to unauthorized access to sensitive administrative functionality, including configuration and operational RC methods. Version 1.73.5 patches the issue.",
  "id": "UBUNTU-CVE-2026-41176",
  "modified": "2026-06-30T16:20:58Z",
  "published": "2026-04-23T00:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-41176"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-41176"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/rclone/rclone/security/advisories/GHSA-25qr-6mpr-f7qx"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8299-1"
    }
  ],
  "related": [
    "USN-8299-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-41176"
  ]
}

WID-SEC-W-2026-1179

Vulnerability from csaf_certbund - Published: 2026-04-19 22:00 - Updated: 2026-05-14 22:00

Summary

rclone: Mehrere Schwachstellen

Severity

Hoch

Scope

2 vulnerabilities in this advisory, including CVE-2026-41176.

CVE-2026-41176

Known affected: 3 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-41176 (GCVE-0-2026-41176)

Previdian

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Public Report Successful Exploitation Confidence: 70% Source: previdian

Details

References

Vulnerability from bitnami_vulndb

Summary

Preconditions

Details

PoC

Minimal reproduction

Testing performed

Impact

UBUNTU-CVE-2026-41176 (CVE-2026-41176)

Tags

Sightings

Nomenclature

Related by attack behaviour