Critical severity9.8NVD Advisory· Published Dec 1, 2025· Updated Oct 18, 2026
CVE-2025-66401
CVE-2025-66401
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
mcp-watchnpm | <= 0.1.2 | — |
Affected products
3cpe:2.3:a:kapilduraphe:mcp_watch:*:*:*:*:*:node.js:*:*+ 1 more
- cpe:2.3:a:kapilduraphe:mcp_watch:*:*:*:*:*:node.js:*:*range: <=0.1.2
- (no CPE)range: <= 0.1.2
Patches
Vulnerability mechanics
References
4- github.com/kapilduraphe/mcp-watch/commit/e7da78c5b4b960f8b66c254059ad9ebc544a91a6nvdPatchWEB
- github.com/kapilduraphe/mcp-watch/security/advisories/GHSA-27m7-ffhq-jqrmnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-27m7-ffhq-jqrmghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-66401ghsaADVISORY
News mentions
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