{"id":"CVE-2026-61568","title":"`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab","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 bro…","severity":"critical","cvss":9.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","cwe":["CWE-350"],"vendor":"zereight","product":"@zereight/mcp-gitlab","affected":["@zereight/mcp-gitlab < 2.1.30"],"patched":["@zereight/mcp-gitlab 2.1.30"],"published":"2026-09-15","updated":"2026-09-16","sourceUpdated":"2026-09-16T19:17:22.520","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-61568","references":[{"url":"https://github.com/zereight/gitlab-mcp/commit/52207c6f5c0e7a39e9235d491225edbb562a0290","label":"security-advisories@github.com"},{"url":"https://github.com/zereight/gitlab-mcp/pull/555","label":"security-advisories@github.com"},{"url":"https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.30","label":"security-advisories@github.com"},{"url":"https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-vmp7-252j-cwp7","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-vmp7-252j-cwp7"}],"tags":["nvd","ghsa","npm","cve.org"],"aliases":["GHSA-vmp7-252j-cwp7"],"ecosystem":"npm","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-16T18:21:15.912542Z"},"ingestedAt":"2026-09-15T21:44:50.635Z","epss":0.00322,"epssPercentile":0.25526,"slug":"CVE-2026-61568","body":"## Overview\n\n`@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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-61568)\n\nAffected packages:\n\n- `@zereight/mcp-gitlab < 2.1.30`\n\nPatched in:\n\n- `@zereight/mcp-gitlab 2.1.30`\n\nSource: https://github.com/advisories/GHSA-vmp7-252j-cwp7","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":52.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}