CVE-2025-67364

HIGH EPSS 43.5%
Published Jan 7, 20265mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Jan 7, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago

Description

fast-filesystem-mcp version 3.4.0 contains a critical path traversal vulnerability in its file operation tools including fast_read_file. This vulnerability arises from improper path validation that fails to resolve symbolic links to their actual physical paths. The safePath and isPathAllowed functions use path.resolve() which does not handle symlinks, allowing attackers to bypass directory access restrictions by creating symlinks within allowed directories that point to restricted system paths. When these symlinks are accessed through valid path references, the validation checks are circumvented, enabling access to unauthorized files.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
43.5% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-24

Affected Products 1

VendorProductVersionRange
efforthyefast-filesystem-mcp3.4.0any

References 2

  • github.com https://github.com/efforthye/fast-filesystem-mcp
    Product
  • github.com https://github.com/efforthye/fast-filesystem-mcp/issues/10
    ExploitIssue Tracking

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.