CVE-2025-66689

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

6.5 / 10

Vector String

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

Vulnerability 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.

Vulnerability Details

Published Date

January 12, 2026

Last Modified

January 22, 2026

CWE ID

CWE-22

Source

NVD

Vendor

busymac

Product

pal_mcp_server

External References

https://github.com/BeehiveInnovations/zen-mcp-server/issues/293
https://github.com/Team-Off-course/MCP-Server-Vuln-Analysis/blob/main/CVE-2025-66689.md

CVE-2025-66689

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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