Vulnerability-Lookup

CVE-2021-4191 (GCVE-0-2021-4191)

Vulnerability from cvelistv5 – Published: 2022-03-28 18:53 – Updated: 2024-08-03 17:16

Previdian

Summary

An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2. Private GitLab instances with restricted sign-ups may be vulnerable to user enumeration to unauthenticated users through the GraphQL API.

Severity

5.3 (Medium)


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

CWE

Information exposure in GitLab

Assigner

GitLab mitre root Scorecard

References

3 references

URL	Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/343898	x_refsource_MISC
https://hackerone.com/reports/1089609	x_refsource_MISC
https://gitlab.com/gitlab-org/cves/-/blob/master/…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
GitLab	GitLab	Affected: >=14.8, <14.8.2 Affected: >=14.7, <14.7.4 Affected: >=13.0, <14.6.5

Credits

Thanks @mungsul and @todb-r7 for reporting this vulnerability through our HackerOne bug bounty program.

Previdian

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: 5e3903d2-ffc1-4e81-b85c-c728f6e40fee

Vulnerability ID: CVE-2021-4191

Status: Confirmed

Status Updated: 2025-04-28 02:00 CEST

Exploited: Yes

Timestamps

First Seen: 2025-04-28

Asserted: 2025-04-28

Scope

Notes: An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2. Private GitLab instances with... | Affected: GitLab / GitLab | CVSS: 5.3 (MEDIUM) | EPSS: 0.80004 | Used in malware: unknown | Not yet in CISA KEV: True

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details

Feed	Previdian (previdian.com)
Title	An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2. Private GitLab instances with...
Cve Id	CVE-2021-4191
Vendor	GitLab
Ghsa Id	GHSA-M37Q-W59J-4VR4
Product	GitLab
Added Date	2025-04-28T00:00:00.000Z
Cvss Score	5.3
Epss Score	0.80004
Previous Ids
Cvss Severity	MEDIUM
Virtual Patch	False
Cvss Estimated	False
Epss Percentile	0.99605
Used In Malware	unknown
Vulnerability Id	CVE-2021-4191
Ahead Of Cisa Kev	None
Not Yet In Cisa Kev	True

References

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

Show details on NVD website

JSON

To clipboard

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bit-gitlab-2021-4191

Vulnerability from bitnami_vulndb

Published

2024-03-06 11:17

Modified

2026-09-08 08:34

Summary

Details

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "gitlab",
        "purl": "pkg:bitnami/gitlab"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "13.0.0"
            },
            {
              "fixed": "14.6.5"
            },
            {
              "introduced": "14.7.0"
            },
            {
              "fixed": "14.7.4"
            },
            {
              "introduced": "14.8.0"
            },
            {
              "fixed": "14.8.2"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
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  ],
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      "cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"
    ],
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  },
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  "id": "BIT-gitlab-2021-4191",
  "modified": "2026-09-08T08:34:36.952Z",
  "published": "2024-03-06T11:17:13.138Z",
  "references": [
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      "type": "ADVISORY",
      "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/343898"
    },
    {
      "type": "ADVISORY",
      "url": "https://hackerone.com/reports/1089609"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4191"
    }
  ],
  "schema_version": "1.5.0"
}

CERTFR-2022-AVI-189

Vulnerability from certfr_avis - Published: 2022-02-28 - Updated: 2022-02-28

De multiples vulnérabilités ont été découvertes dans les produits GitLab. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire, un déni de service à distance et une atteinte à l'intégrité des données.

Solution

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

None

Impacted products

Vendor	Product	Description
GitLab	N/A	GitLab CE/EE versions antérieures à 14.6.5
GitLab	N/A	GitLab CE/EE versions 14.8.x antérieures à 14.8.2
GitLab	N/A	GitLab CE/EE versions 14.7.x antérieures à 14.7.4

References

Title

Publication Time

EUVD-2026-21352

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 06:00

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": "2026-10-02T06:00:00.935975+00:00",
  "id": "EUVD-2026-21352"
}

FKIE_CVE-2021-4191

Vulnerability from fkie_nvd - Published: 2022-03-28 19:15 - Updated: 2026-06-17 04:19

Previdian

Severity

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Summary

References

URL	Tags
cve@gitlab.com	https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json	Vendor Advisory
cve@gitlab.com	https://gitlab.com/gitlab-org/gitlab/-/issues/343898	Broken Link
cve@gitlab.com	https://hackerone.com/reports/1089609	Permissions Required, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://gitlab.com/gitlab-org/gitlab/-/issues/343898	Broken Link
af854a3a-2127-422b-91ae-364da2661108	https://hackerone.com/reports/1089609	Permissions Required, Third Party Advisory

Impacted products

Vendor	Product	Version
gitlab	gitlab	*
gitlab	gitlab	*
gitlab	gitlab	*
gitlab	gitlab	*
gitlab	gitlab	*
gitlab	gitlab	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "GitLab",
          "vendor": "GitLab",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e=14.8, \u003c14.8.2"
            },
            {
              "status": "affected",
              "version": "\u003e=14.7, \u003c14.7.4"
            },
            {
              "status": "affected",
              "version": "\u003e=13.0, \u003c14.6.5"
            }
          ]
        }
      ],
      "source": "cve@gitlab.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
              "matchCriteriaId": "E86DDC12-65BD-493C-8682-9FB31C88B266",
              "versionEndExcluding": "14.6.5",
              "versionStartIncluding": "13.0.0",
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            },
            {
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            },
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              "versionEndExcluding": "14.8.2",
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            }
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2. Private GitLab instances with restricted sign-ups may be vulnerable to user enumeration to unauthenticated users through the GraphQL API."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema en GitLab CE/EE afectando las versiones 13.0 a 14.6.5, 14.7 a 14.7.4 y 14.8 a 14.8.2. Las instancias privadas de GitLab con registros restringidos pueden ser vulnerables a una enumeraci\u00f3n de usuarios a usuarios no autenticados mediante la API GraphQL"
    }
  ],
  "id": "CVE-2021-4191",
  "lastModified": "2026-06-17T04:19:11.420",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "cve@gitlab.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2022-03-28T19:15:08.093",
  "references": [
    {
      "source": "cve@gitlab.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json"
    },
    {
      "source": "cve@gitlab.com",
      "tags": [
        "Broken Link"
      ],
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/343898"
    },
    {
      "source": "cve@gitlab.com",
      "tags": [
        "Permissions Required",
        "Third Party Advisory"
      ],
      "url": "https://hackerone.com/reports/1089609"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link"
      ],
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/343898"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Permissions Required",
        "Third Party Advisory"
      ],
      "url": "https://hackerone.com/reports/1089609"
    }
  ],
  "sourceIdentifier": "cve@gitlab.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-M37Q-W59J-4VR4

Vulnerability from github – Published: 2022-03-29 00:01 – Updated: 2022-04-05 00:00

Details

Severity

5.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-4191"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-03-28T19:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2. Private GitLab instances with restricted sign-ups may be vulnerable to user enumeration to unauthenticated users through the GraphQL API.",
  "id": "GHSA-m37q-w59j-4vr4",
  "modified": "2022-04-05T00:00:49Z",
  "published": "2022-03-29T00:01:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4191"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/1089609"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/343898"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GSD-2021-4191

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Aliases

CVE-2021-4191

Aliases

CVE-2021-4191

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-4191",
    "description": "An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2. Private GitLab instances with restricted sign-ups may be vulnerable to user enumeration to unauthenticated users through the GraphQL API.",
    "id": "GSD-2021-4191"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-4191"
      ],
      "details": "An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2. Private GitLab instances with restricted sign-ups may be vulnerable to user enumeration to unauthenticated users through the GraphQL API.",
      "id": "GSD-2021-4191",
      "modified": "2023-12-13T01:23:11.598215Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@gitlab.com",
        "ID": "CVE-2021-4191",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "GitLab",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003e=14.8, \u003c14.8.2"
                        },
                        {
                          "version_value": "\u003e=14.7, \u003c14.7.4"
                        },
                        {
                          "version_value": "\u003e=13.0, \u003c14.6.5"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "GitLab"
            }
          ]
        }
      },
      "credit": [
        {
          "lang": "eng",
          "value": "Thanks @mungsul and @todb-r7 for reporting this vulnerability through our HackerOne bug bounty program."
        }
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      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
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          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Information exposure in GitLab"
              }
            ]
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        ]
      },
      "references": {
        "reference_data": [
          {
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            "refsource": "MISC",
            "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/343898"
          },
          {
            "name": "https://hackerone.com/reports/1089609",
            "refsource": "MISC",
            "url": "https://hackerone.com/reports/1089609"
          },
          {
            "name": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json",
            "refsource": "CONFIRM",
            "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
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                "cpe23Uri": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "14.8.2",
                "versionStartIncluding": "14.8",
                "vulnerable": true
              },
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                "cpe_name": [],
                "versionEndExcluding": "14.8.2",
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                "vulnerable": true
              },
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                "cpe_name": [],
                "versionEndExcluding": "14.6.5",
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                "cpe_name": [],
                "versionEndExcluding": "14.6.5",
                "versionStartIncluding": "13.0.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "14.7.4",
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                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "14.7.4",
                "versionStartIncluding": "14.7.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
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          "ID": "CVE-2021-4191"
        },
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        "data_version": "4.0",
        "description": {
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            }
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        },
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            {
              "name": "https://gitlab.com/gitlab-org/gitlab/-/issues/343898",
              "refsource": "MISC",
              "tags": [
                "Broken Link"
              ],
              "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/343898"
            },
            {
              "name": "https://hackerone.com/reports/1089609",
              "refsource": "MISC",
              "tags": [
                "Permissions Required",
                "Third Party Advisory"
              ],
              "url": "https://hackerone.com/reports/1089609"
            },
            {
              "name": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json",
              "refsource": "CONFIRM",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json"
            }
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        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2022-04-04T18:22Z",
      "publishedDate": "2022-03-28T19:15Z"
    }
  }
}

UBUNTU-CVE-2021-4191 (CVE-2021-4191)

Vulnerability from osv_ubuntu – Published: 2022-03-28 19:15 – Updated: 2025-10-24 04:50 – Source website

Previdian

Details

Severity

5.3 (Medium)


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

5.3 (Medium)


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

N/A (UNKNOWN)


                    
                      negligible

References

URL

Type

	https://ubuntu.com/security/CVE-2021-4191	REPORT
	https://about.gitlab.com/releases/2022/02/25/crit…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2021-4191	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gitlab",
            "binary_version": "8.5.8+dfsg-5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "gitlab",
        "purl": "pkg:deb/ubuntu/gitlab@8.5.8+dfsg-5?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.4.3+dfsg-9",
        "8.4.3+dfsg-12",
        "8.5.8+dfsg-5"
      ]
    }
  ],
  "aliases": [],
  "details": "An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2. Private GitLab instances with restricted sign-ups may be vulnerable to user enumeration to unauthenticated users through the GraphQL API.",
  "id": "UBUNTU-CVE-2021-4191",
  "modified": "2025-10-24T04:50:01Z",
  "published": "2022-03-28T19:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-4191"
    },
    {
      "type": "REPORT",
      "url": "https://about.gitlab.com/releases/2022/02/25/critical-security-release-gitlab-14-8-2-released/"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-4191"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "negligible",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-4191"
  ]
}

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-2021-4191 (GCVE-0-2021-4191)

Previdian

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Public Report Successful Exploitation Confidence: 70% Source: previdian

Details

References

bit-gitlab-2021-4191

Vulnerability from bitnami_vulndb

CERTFR-2022-AVI-189

Solution

EUVD-2026-21352

FKIE_CVE-2021-4191

GHSA-M37Q-W59J-4VR4

GSD-2021-4191

UBUNTU-CVE-2021-4191 (CVE-2021-4191)

Tags

Sightings

Nomenclature

Related by attack behaviour