CVE-2026-61568
Published:September 15, 2026
Updated:October 13, 2026
"@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
https://github.com/zereight/gitlab-mcp.git (GITHUB):
Affected version(s) >=v1.0.72 <v2.1.30Fix Suggestion:
Update to version v2.1.30@zereight/mcp-gitlab (NPM):
Affected version(s) >=1.0.0 <2.1.30Fix Suggestion:
Update to version 2.1.30Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.4
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
9.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Reliance on Reverse DNS Resolution for a Security-Critical Action
EPSS
Base Score:
0.53