VULNERABILITY INTELLIGENCE

CVE-2025-66401

CVSS score9.8 CRITICAL
EPSS probability2.21%
CISA KEVNot currently listed
Published2025-12-01
Last modified2026-10-18
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

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.

Weakness classification

  • security-advisories@github.com: CWE-78

Primary references