CVEvulnerability

CVE-2025-66689

6.5 MEDIUM Published 2026-01-12 Modified 2026-06-17 Official page ↗

Status: Analyzed
Published: 2026-01-12
Last modified: 2026-06-17
Assigner: [email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0): 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weaknesses: CWE-22, CWE-552

Description

A path traversal vulnerability exists in Zen MCP Server before 9.8.2 that allows authenticated attackers to read arbitrary files on the system. The vulnerability is caused by flawed logic in the is_dangerous_path() validation function that uses exact string matching against a blacklist of system directories. Attackers can bypass these restrictions by accessing subdirectories of blacklisted paths.

Affected configurations

• busymac pal mcp server (< 9.8.2)

Weakness · CWE (2)

CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness
CWE-552 Files or Directories Accessible to External Parties weakness

References

https://github.com/BeehiveInnovations/zen-mcp-server/issues/293 Exploit, Issue Tracking, Third Party Advisory
https://github.com/Team-Off-course/MCP-Server-Vuln-Analysis/blob/main/CVE-2025-66689.md Exploit, Third Party Advisory

CVE-2025-66689

Description

Affected configurations

Related

Weakness · CWE (2)

References