TI-2025-40838 Aliases CVE-2025-66401 GHSA-27m7-ffhq-jqrm

MCP Watch has a Critical Command Injection in cloneRepo allows Remote Code Execution (RCE) via malicious URL

HIGH 82CWE-78Published 2025-12-01 · Updated 2025-12-02

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-78.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.02209 82nd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
kapilduraphe	mcp-watch	up to 0.1.2	—	No fix listed	CNA
—	mcp-watch (npm)	up to 0.1.2	—	No fix listed	GHSA-27m7-ffhq-jqrm

mcp-watch Vendorkapilduraphe Affected up to 0.1.2 Fixed in — No fix listed CNA
mcp-watch (npm) Vendor— Affected up to 0.1.2 Fixed in — No fix listed GHSA-27m7-ffhq-jqrm

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:kapilduraphe:mcp_watch::::::node.js::*	up to 0.1.2	Vulnerable	kapilduraphe

cpe:2.3:a:kapilduraphe:mcp_watch:*:*:*:*:*:node.js:*:* Versions up to 0.1.2 Vulnerable ·kapilduraphe

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-66401
2026-10-03 Alias added: GHSA-27m7-ffhq-jqrm

References

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences