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CVE-2025-66401

MCP Watch

9.8
Severity
Critical
Published
December 1, 2025
Last modified
October 18, 2026

MCP Watch is a comprehensive security scanner for Model Context Protocol (MCP) servers. In 0.1.2 and earlier, the MCPScanner class contains a critical Command Injection vulnerability in the cloneRepo method. The application passes the user-supplied githubUrl argument directly to a system shell via execSync without sanitization. This allows an attacker to execute arbitrary commands on the host machine by appending shell metacharacters to the URL.

CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness

References

CVE-2025-66401 on NVD

Listed in

CriticalMCP serversCommand injection

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