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VULNERABILITIES

CVE-2026-61568 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:9.6 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/zereight/gitlab-mcp/commit/52207c6f5c0e7a39e9235d491225edbb562a0290 [email protected]
https://github.com/zereight/gitlab-mcp/pull/555 [email protected]
https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.30 [email protected]
https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-vmp7-252j-cwp7 [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-350Reliance on Reverse DNS Resolution for a Security-Critical Action[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-61568
NVD Published Date:
Sep 15, 2026
NVD Last Modified:
Sep 16, 2026
Source:
[email protected]
CVE-2026-61568 Details - Not Deferred