Critical severity9.6NVD Advisory· Published Sep 15, 2026· Updated Sep 30, 2026
CVE-2026-61568
CVE-2026-61568
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.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@zereight/mcp-gitlabnpm | < 2.1.30 | 2.1.30 |
Affected products
1- Range: <2.1.30
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-vmp7-252j-cwp7ghsaADVISORY
- github.com/zereight/gitlab-mcp/commit/52207c6f5c0e7a39e9235d491225edbb562a0290nvdWEB
- github.com/zereight/gitlab-mcp/pull/555nvdWEB
- github.com/zereight/gitlab-mcp/releases/tag/v2.1.30nvdWEB
- github.com/zereight/gitlab-mcp/security/advisories/GHSA-vmp7-252j-cwp7nvdWEB
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