Path Traversal Vulnerability in Geekgod382 Filesystem MCP Server
CVE-2026-7400

6.9MEDIUM

Key Information:

Vendor

Geekgod382

Status
Filesystem-mcp-server
Vendor
CVE Published:
29 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7400?

A security vulnerability has been identified in the Geekgod382 filesystem-mcp-server version 1.0.0, specifically within the function is_path_allowed located in the file server.py related to read_file_tool/write_file_tool. This flaw allows for path traversal, which could be exploited remotely by unauthorized attackers. The vulnerability has been publicly disclosed, underscoring the importance of immediate action. Users are recommended to upgrade to version 1.1.0, which introduces a patch (45364545fc60dc80aadcd4379f08042d3d3d292e) that mitigates this issue effectively.

Affected Version(s)

filesystem-mcp-server 1.0.0

filesystem-mcp-server 1.1.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-7400 - Proof of Concept

References

https://vuldb.com/vuln/360123
vdb-entrytechnical-description
https://vuldb.com/vuln/360123/cti
signaturepermissions-required
https://vuldb.com/submit/803495
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LargeW (VulDB User)
.