{"id":"CVE-2026-61568","revision":"134815e1bf9042218d48c47ecb5ff3ea","records":[{"revision":"134815e1bf9042218d48c47ecb5ff3ea","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-61568","aliases":[],"title":"@zereight/mcp-gitlab: DNS rebinding reaches local Streamable HTTP MCP transport","description":"`@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.","state":0,"publishedAt":"2026-09-15T20:56:11.723+00:00","modifiedAt":"2026-09-16T18:36:39.016+00:00","affected":[{"ecosystem":"Vendor product","name":"gitlab-mcp","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"zereight\",\n                    \"product\": \"gitlab-mcp\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.1.30\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","score":9.6,"severity":"CRITICAL"}],"references":["https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-vmp7-252j-cwp7","https://github.com/zereight/gitlab-mcp/pull/555","https://github.com/zereight/gitlab-mcp/commit/52207c6f5c0e7a39e9235d491225edbb562a0290","https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.30"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-61568","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-61568","identifiers":["CVE-2026-61568"]},"retained":false,"historicalAffected":[]}],"coverage":[]}