What is the CVSS score of CVE-2025-66689?

CVE-2025-66689 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of Pal Mcp Server are affected by CVE-2025-66689?

Organizations using Zen MCP Server should be aware of notable risk from CVE-2025-66689, a path traversal vulnerability rated CVSS 6.5. This could allow unauthorized file access.

Is there a public PoC exploit available for CVE-2025-66689?

Yes, a public proof-of-concept exploit is available for CVE-2025-66689. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-66689?

Within 30 days: Identify affected systems running Zen MCP Server and apply vendor patches as part of regular patch cycle. Review file handling controls.

Pal Mcp Server CVE-2025-66689

MEDIUM

Path Traversal (CWE-22)

2026-01-12 cve@mitre.org

Path Traversal Pal Mcp Server

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 22, 2026 - 21:57 vuln.today

Public exploit code

CVE Published

Jan 12, 2026 - 17:15 nvd

MEDIUM 6.5

DescriptionCVE.org

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.

AnalysisAI

A path traversal vulnerability exists in Zen MCP Server before 9.8.2 that allows authenticated attackers to read arbitrary files on the system. [CVSS 6.5 MEDIUM]

Technical ContextAI

Classified as CWE-22 (Path Traversal). Affects Pal Mcp Server. 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.

RemediationAI

Monitor vendor advisories for a patch. Validate and sanitize file path inputs. Use allowlists. Restrict network access to the affected service where possible.

CVE-2025-66689 vulnerability details – vuln.today

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Pal Mcp Server CVE-2025-66689

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code