CVE-2025-66401: MCP Watch has a Critical Command Injection in cloneRepo allows Remote Code Execution (RCE) via malicious URL

December 2, 2025

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.

References

github.com/advisories/GHSA-27m7-ffhq-jqrm
github.com/kapilduraphe/mcp-watch
github.com/kapilduraphe/mcp-watch/commit/e7da78c5b4b960f8b66c254059ad9ebc544a91a6
github.com/kapilduraphe/mcp-watch/security/advisories/GHSA-27m7-ffhq-jqrm
nvd.nist.gov/vuln/detail/CVE-2025-66401

Code Behaviors & Features

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