{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.1.30"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "52207c6f5c0e7a39e9235d491225edbb562a0290"
            },
            {
              "fixed": "cff3ebeec272d7cc609d9b3cab57f52cb15fae96"
            }
          ],
          "repo": "https://github.com/zereight/gitlab-mcp",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-vmp7-252j-cwp7"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-350"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61568.json"
  },
  "details": "`@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.",
  "id": "CVE-2026-61568",
  "modified": "2026-09-18T03:30:48.943269116Z",
  "published": "2026-09-15T20:56:11.723Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.30"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61568.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-vmp7-252j-cwp7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-61568"
    },
    {
      "type": "FIX",
      "url": "https://github.com/zereight/gitlab-mcp/commit/52207c6f5c0e7a39e9235d491225edbb562a0290"
    },
    {
      "type": "FIX",
      "url": "https://github.com/zereight/gitlab-mcp/pull/555"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "@zereight/mcp-gitlab: DNS rebinding reaches local Streamable HTTP MCP transport"
}