{"cve":"CVE-2026-61568","nvd":{"published":"2026-09-15T21:16:41.570","modified":"2026-09-30T17:51:56.193","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"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},"cwes":["CWE-350"],"references":["https://github.com/zereight/gitlab-mcp/commit/52207c6f5c0e7a39e9235d491225edbb562a0290","https://github.com/zereight/gitlab-mcp/pull/555","https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.30","https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-vmp7-252j-cwp7"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:54:41.405518556+00:00"},"epss":{"cve":"CVE-2026-61568","score":0.00532,"percentile":0.44675,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-vmp7-252j-cwp7","url":"https://osv.dev/vulnerability/GHSA-vmp7-252j-cwp7","summary":"@zereight/mcp-gitlab: DNS rebinding reaches local Streamable HTTP MCP transport","modified":"2026-09-15T21:00:08.493839004Z","packages":[{"ecosystem":"npm","name":"@zereight/mcp-gitlab","purl":"pkg:npm/%40zereight/mcp-gitlab","ranges":["<2.1.30"],"fixed":["2.1.30"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}