{"id":"CVE-2026-61560","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-61560","summary":"`@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.…","details":"`@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.","published":"2026-09-15T22:16:58.040","modified":"2026-09-15T22:16:58.040","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/zereight/gitlab-mcp/pull/482","label":"zereight/gitlab-mcp#482"},"references":[{"type":"WEB","url":"https://github.com/zereight/gitlab-mcp/pull/482"},{"type":"WEB","url":"https://github.com/zereight/gitlab-mcp/pull/554"},{"type":"WEB","url":"https://github.com/zereight/gitlab-mcp/pull/622"},{"type":"WEB","url":"https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-cv3r-c5h8-f4g5"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-15T22:16:58.040"}}