{"id":"CVE-2026-61560","revision":"8e5260dc716648fb875e055a37ecd949","records":[{"revision":"8e5260dc716648fb875e055a37ecd949","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-61560","aliases":[],"title":"@zereight/mcp-gitlab's unauthenticated arbitrary file read via `upload_markdown` enables PAT exfiltration and full account takeover","description":"`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Prior to version 2.1.27, the SSE transport mode (`SSE=true`) exposes all MCP tools without any authentication. The `upload_markdown` tool reads arbitrary files from the server's local filesystem via an unsanitized `file_path` parameter and uploads them to a GitLab project. Combined, any unauthenticated network-reachable attacker can read `/proc/self/environ` to steal the server's `GITLAB_PERSONAL_ACCESS_TOKEN` and achieve full GitLab account takeover. This is the default configuration for Docker deployments. Version 2.1.27 contains a patch.","state":0,"publishedAt":"2026-09-15T21:09:00.405+00:00","modifiedAt":"2026-09-16T13:59:32.899+00:00","affected":[{"ecosystem":"Vendor product","name":"gitlab-mcp","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"zereight\",\n                    \"product\": \"gitlab-mcp\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.1.27\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-cv3r-c5h8-f4g5","https://github.com/zereight/gitlab-mcp/pull/482","https://github.com/zereight/gitlab-mcp/pull/554","https://github.com/zereight/gitlab-mcp/pull/622"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-61560","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-61560","identifiers":["CVE-2026-61560"]},"retained":false,"historicalAffected":[]}],"coverage":[]}