Vulnerability-Lookup

CVE-2026-104120 (GCVE-0-2026-104120)

Vulnerability from cvelistv5 – Published: 2026-10-02 02:15 – Updated: 2026-10-02 02:15

Title

modelcontextprotocol mcp-server-fetch/mcp-server-everything Fetch Tool server.py fetch_url server-side request forgery

Summary

A security vulnerability has been detected in modelcontextprotocol mcp-server-fetch and mcp-server-everything up to 2026.6.4. Affected is the function fetch_url of the file mcp_server_fetch/server.py of the component Fetch Tool. The manipulation of the argument url/path leads to server-side request forgery. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The pull request to fix this issue awaits acceptance.

Severity

6.9 (Medium)


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

7.3 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C

7.3 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C

CWE

CWE-918 - Server-Side Request Forgery

Assigner

VulDB mitre root Scorecard

References

6 references

URL	Tags
https://vuldb.com/vuln/412764	vdb-entrytechnical-description
https://vuldb.com/vuln/412764/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-104120	third-party-advisory
https://vuldb.com/submit/960099	third-party-advisory
https://github.com/modelcontextprotocol/servers/i…	exploitissue-tracking
https://github.com/modelcontextprotocol/servers/p…	issue-trackingpatch

Impacted products

2 products

Vendor	Product	Version
modelcontextprotocol	mcp-server-fetch	Affected: 2026.6.0 Affected: 2026.6.1 Affected: 2026.6.2 Affected: 2026.6.3 Affected: 2026.6.4 cpe:2.3:a:modelcontextprotocol:mcp-server-fetch::::::::
modelcontextprotocol	mcp-server-everything	Affected: 2026.6.0 Affected: 2026.6.1 Affected: 2026.6.2 Affected: 2026.6.3 Affected: 2026.6.4 cpe:2.3:a:modelcontextprotocol:mcp-server-everything::::::::

Credits

geochen (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:modelcontextprotocol:mcp-server-fetch:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Fetch Tool"
          ],
          "product": "mcp-server-fetch",
          "vendor": "modelcontextprotocol",
          "versions": [
            {
              "status": "affected",
              "version": "2026.6.0"
            },
            {
              "status": "affected",
              "version": "2026.6.1"
            },
            {
              "status": "affected",
              "version": "2026.6.2"
            },
            {
              "status": "affected",
              "version": "2026.6.3"
            },
            {
              "status": "affected",
              "version": "2026.6.4"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:modelcontextprotocol:mcp-server-everything:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Fetch Tool"
          ],
          "product": "mcp-server-everything",
          "vendor": "modelcontextprotocol",
          "versions": [
            {
              "status": "affected",
              "version": "2026.6.0"
            },
            {
              "status": "affected",
              "version": "2026.6.1"
            },
            {
              "status": "affected",
              "version": "2026.6.2"
            },
            {
              "status": "affected",
              "version": "2026.6.3"
            },
            {
              "status": "affected",
              "version": "2026.6.4"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "geochen (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A security vulnerability has been detected in modelcontextprotocol mcp-server-fetch and mcp-server-everything up to 2026.6.4. Affected is the function fetch_url of the file mcp_server_fetch/server.py of the component Fetch Tool. The manipulation of the argument url/path leads to server-side request forgery. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The pull request to fix this issue awaits acceptance."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 7.5,
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:C",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "Server-Side Request Forgery",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
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        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-412764 | modelcontextprotocol mcp-server-fetch/mcp-server-everything Fetch Tool server.py fetch_url server-side request forgery",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/412764"
        },
        {
          "name": "VDB-412764 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/412764/cti"
        },
        {
          "name": "CVE-2026-104120 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-104120"
        },
        {
          "name": "Submit #960099 | https://github.com/modelcontextprotocol/ servers 2026.6.4 Server-Side Request Forgery",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/960099"
        },
        {
          "tags": [
            "exploit",
            "issue-tracking"
          ],
          "url": "https://github.com/modelcontextprotocol/servers/issues/4492"
        },
        {
          "tags": [
            "issue-tracking",
            "patch"
          ],
          "url": "https://github.com/modelcontextprotocol/servers/pull/4890"
        }
      ],
      "timeline": [
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          "lang": "en",
          "time": "2026-10-01T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-10-01T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-10-01T20:20:15.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "modelcontextprotocol mcp-server-fetch/mcp-server-everything Fetch Tool server.py fetch_url server-side request forgery",
      "x_generator": [
        "VulDB PVTS v202610"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-104120",
    "datePublished": "2026-10-02T02:15:18.514Z",
    "dateReserved": "2026-10-01T18:15:10.419Z",
    "dateUpdated": "2026-10-02T02:15:18.514Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "cpes": [
                  "cpe:2.3:a:modelcontextprotocol:mcp-server-fetch:*:*:*:*:*:*:*:*"
                ],
                "modules": [
                  "Fetch Tool"
                ],
                "product": "mcp-server-fetch",
                "vendor": "modelcontextprotocol",
                "versions": [
                  {
                    "status": "affected",
                    "version": "2026.6.0"
                  },
                  {
                    "status": "affected",
                    "version": "2026.6.1"
                  },
                  {
                    "status": "affected",
                    "version": "2026.6.2"
                  },
                  {
                    "status": "affected",
                    "version": "2026.6.3"
                  },
                  {
                    "status": "affected",
                    "version": "2026.6.4"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:modelcontextprotocol:mcp-server-everything:*:*:*:*:*:*:*:*"
                ],
                "modules": [
                  "Fetch Tool"
                ],
                "product": "mcp-server-everything",
                "vendor": "modelcontextprotocol",
                "versions": [
                  {
                    "status": "affected",
                    "version": "2026.6.0"
                  },
                  {
                    "status": "affected",
                    "version": "2026.6.1"
                  },
                  {
                    "status": "affected",
                    "version": "2026.6.2"
                  },
                  {
                    "status": "affected",
                    "version": "2026.6.3"
                  },
                  {
                    "status": "affected",
                    "version": "2026.6.4"
                  }
                ]
              }
            ],
            "source": "cna@vuldb.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A security vulnerability has been detected in modelcontextprotocol mcp-server-fetch and mcp-server-everything up to 2026.6.4. Affected is the function fetch_url of the file mcp_server_fetch/server.py of the component Fetch Tool. The manipulation of the argument url/path leads to server-side request forgery. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The pull request to fix this issue awaits acceptance."
          }
        ],
        "id": "CVE-2026-104120",
        "lastModified": "2026-10-02T03:16:38.840",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 7.5,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "cna@vuldb.com",
              "type": "Secondary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "LOW",
                "baseScore": 7.3,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
                "version": "3.1"
              },
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              "impactScore": 3.4,
              "source": "cna@vuldb.com",
              "type": "Primary"
            }
          ],
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "PROOF_OF_CONCEPT",
                "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:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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": "LOW",
                "vulnConfidentialityImpact": "LOW",
                "vulnIntegrityImpact": "LOW",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "source": "cna@vuldb.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-02T03:16:38.840",
        "references": [
          {
            "source": "cna@vuldb.com",
            "url": "https://github.com/modelcontextprotocol/servers/issues/4492"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://github.com/modelcontextprotocol/servers/pull/4890"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/cve/CVE-2026-104120"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/submit/960099"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/vuln/412764"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/vuln/412764/cti"
          }
        ],
        "sourceIdentifier": "cna@vuldb.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-918"
              }
            ],
            "source": "cna@vuldb.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}

EUVD-2026-382030

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 08:41

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": "2026-10-02T08:41:32.157110+00:00",
  "id": "EUVD-2026-382030"
}

FKIE_CVE-2026-104120

Vulnerability from fkie_nvd - Published: 2026-10-02 03:16 - Updated: 2026-10-02 03:16

Severity

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

Summary

References

	URL	Tags
	cna@vuldb.com	https://github.com/modelcontextprotocol/servers/issues/4492
	cna@vuldb.com	https://github.com/modelcontextprotocol/servers/pull/4890
	cna@vuldb.com	https://vuldb.com/cve/CVE-2026-104120
	cna@vuldb.com	https://vuldb.com/submit/960099
	cna@vuldb.com	https://vuldb.com/vuln/412764
	cna@vuldb.com	https://vuldb.com/vuln/412764/cti

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:modelcontextprotocol:mcp-server-fetch:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Fetch Tool"
          ],
          "product": "mcp-server-fetch",
          "vendor": "modelcontextprotocol",
          "versions": [
            {
              "status": "affected",
              "version": "2026.6.0"
            },
            {
              "status": "affected",
              "version": "2026.6.1"
            },
            {
              "status": "affected",
              "version": "2026.6.2"
            },
            {
              "status": "affected",
              "version": "2026.6.3"
            },
            {
              "status": "affected",
              "version": "2026.6.4"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:modelcontextprotocol:mcp-server-everything:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Fetch Tool"
          ],
          "product": "mcp-server-everything",
          "vendor": "modelcontextprotocol",
          "versions": [
            {
              "status": "affected",
              "version": "2026.6.0"
            },
            {
              "status": "affected",
              "version": "2026.6.1"
            },
            {
              "status": "affected",
              "version": "2026.6.2"
            },
            {
              "status": "affected",
              "version": "2026.6.3"
            },
            {
              "status": "affected",
              "version": "2026.6.4"
            }
          ]
        }
      ],
      "source": "cna@vuldb.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A security vulnerability has been detected in modelcontextprotocol mcp-server-fetch and mcp-server-everything up to 2026.6.4. Affected is the function fetch_url of the file mcp_server_fetch/server.py of the component Fetch Tool. The manipulation of the argument url/path leads to server-side request forgery. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The pull request to fix this issue awaits acceptance."
    }
  ],
  "id": "CVE-2026-104120",
  "lastModified": "2026-10-02T03:16:38.840",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
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          "attackComplexity": "LOW",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.4,
        "source": "cna@vuldb.com",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "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:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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": "LOW",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-10-02T03:16:38.840",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/modelcontextprotocol/servers/issues/4492"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/modelcontextprotocol/servers/pull/4890"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/cve/CVE-2026-104120"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/960099"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/412764"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/412764/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Primary"
    }
  ]
}

GHSA-V78Q-44MM-WF7Q

Vulnerability from github – Published: 2026-10-02 03:31 – Updated: 2026-10-02 03:31

Details

Severity

7.3 (High)


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

5.5 (Medium)


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

Show details on source website

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To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-104120"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-02T03:16:38Z",
    "severity": "MODERATE"
  },
  "details": "A security vulnerability has been detected in modelcontextprotocol mcp-server-fetch and mcp-server-everything up to 2026.6.4. Affected is the function fetch_url of the file mcp_server_fetch/server.py of the component Fetch Tool. The manipulation of the argument url/path leads to server-side request forgery. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The pull request to fix this issue awaits acceptance.",
  "id": "GHSA-v78q-44mm-wf7q",
  "modified": "2026-10-02T03:31:10Z",
  "published": "2026-10-02T03:31:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104120"
    },
    {
      "type": "WEB",
      "url": "https://github.com/modelcontextprotocol/servers/issues/4492"
    },
    {
      "type": "WEB",
      "url": "https://github.com/modelcontextprotocol/servers/pull/4890"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-104120"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/960099"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/412764"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/412764/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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"
    }
  ]
}

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-2026-104120 (GCVE-0-2026-104120)

EUVD-2026-382030

FKIE_CVE-2026-104120

GHSA-V78Q-44MM-WF7Q

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Nomenclature

Related by attack behaviour