CVE-2026-61568: `@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…

PriorityP353critical9.6CVSS 3.1

AVNACLPRNUIRSCCHIHAH

EPSS

0.53%

42.9th percentile

`@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

2 ranges

Vendor	Product	Version range	Fixed in
zereight	gitlab-mcp	< 2.1.30	2.1.30
zereight	mcp-gitlab	>= 0 < 2.1.30	2.1.30

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