CVE-2025-66689

MEDIUM

6.5

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.

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published1/12/2026

Last Modified1/22/2026

Sourcenvd

Honeypot Sightings0

Affected Products

busymac:pal_mcp_server

Weaknesses (CWE)

CWE-22CWE-552

References

https://github.com/BeehiveInnovations/zen-mcp-server/issues/293(cve@mitre.org)

https://github.com/Team-Off-course/MCP-Server-Vuln-Analysis/blob/main/CVE-2025-66689.md(cve@mitre.org)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.