Skip to content
OpenAdvisories
Medium · 6.5 CVE-2025-66689 EUVD-2026-1917GHSA-577g-w45q-4pwf

A path traversal vulnerability exists in Zen MCP Server before 9.8.2 that allows authenticated attackers to read arbitrary files on the sys…

Published Jan 12, 2026 · Updated Jan 12, 2026 · Assigned by mitre

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.

References