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FKIE_CVE-2026-61568

Vulnerability from fkie_nvd - Published: 2026-09-15 21:16 - Updated: 2026-09-15 21:16
Severity
9.6 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Summary
`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Versions prior to 2.1.30 expose the Streamable HTTP MCP endpoint without an effective Host or Origin allowlist. A malicious web page can use DNS rebinding to route browser requests to a victim's local MCP listener while preserving an attacker-controlled `Host` and `Origin`. The server accepts those headers and reaches the MCP initialization path instead of rejecting the request at the HTTP boundary. Version 2.1.30 contains a patch.
References
security-advisories@github.comhttps://github.com/zereight/gitlab-mcp/commit/52207c6f5c0e7a39e9235d491225edbb562a0290
security-advisories@github.comhttps://github.com/zereight/gitlab-mcp/pull/555
security-advisories@github.comhttps://github.com/zereight/gitlab-mcp/releases/tag/v2.1.30
security-advisories@github.comhttps://github.com/zereight/gitlab-mcp/security/advisories/GHSA-vmp7-252j-cwp7
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "gitlab-mcp",
          "vendor": "zereight",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.1.30"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Versions prior to 2.1.30 expose the Streamable HTTP MCP endpoint without an effective Host or Origin allowlist. A malicious web page can use DNS rebinding to route browser requests to a victim\u0027s local MCP listener while preserving an attacker-controlled `Host` and `Origin`. The server accepts those headers and reaches the MCP initialization path instead of rejecting the request at the HTTP boundary. Version 2.1.30 contains a patch."
    }
  ],
  "id": "CVE-2026-61568",
  "lastModified": "2026-09-15T21:16:41.570",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.6,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 6.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-15T21:16:41.570",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zereight/gitlab-mcp/commit/52207c6f5c0e7a39e9235d491225edbb562a0290"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zereight/gitlab-mcp/pull/555"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.30"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-vmp7-252j-cwp7"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-350"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}



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