CRITICAL

CVE-2026-61568

2026-09-15 CVSS v3.1

CVSS

9.6

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.

Weakness (CWE)

CWE-350

EPSS Score

0.32%

Probability of exploitation in next 30 days

25.5th percentile

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

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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