CVE-2025-66401

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 v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/kapilduraphe/mcp-watch/commit/e7da78c5b4b960f8b66c254059ad9ebc544a91a6	Patch
https://github.com/kapilduraphe/mcp-watch/security/advisories/GHSA-27m7-ffhq-jqrm	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:kapilduraphe:mcp_watch:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2025-12-01 23:15

Updated : 2026-06-17 09:56

NVD link : CVE-2025-66401

Mitre link : CVE-2025-66401

CVE.ORG link : CVE-2025-66401

JSON object : View

Products Affected

kapilduraphe

mcp_watch

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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