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CVSS 7.3 · HIGH

CVE-2026-7400

A security vulnerability has been detected in geekgod382 filesystem-mcp-server 1.0.0. This issue affects the function is_path_allowed of the file server.py of the component read_file_tool/write_file_tool. Such manipulation leads to path traversal. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 1.1.0 is capable of addressing this issue. The name of the patch is 45364545fc60dc80aadcd4379f08042d3d3d292e. Upgrading the affected component is advised.

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Analysis

This is a path traversal vulnerability in a specific GitHub user's implementation of an MCP server. While the bug is severe (remote file read/write) and MCP is a trending protocol for AI agents, this specific package is not a widely used library or industry-standard tool.

Severity

Score: 7.3(HIGH)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
AV: NETWORK
AC: LOW
PR: NONE
UI: NONE
S: UNCHANGED
C: LOW
I: LOW
A: LOW
Weakness (CWE): CWE-22

EPSS

Probability of exploitation (next 30 days): 0.0007 (0.1%)
Percentile: 20.4%
EPSS: 2026-05-06

Technical description

A security vulnerability has been detected in geekgod382 filesystem-mcp-server 1.0.0. This issue affects the function is_path_allowed of the file server.py of the component read_file_tool/write_file_tool. Such manipulation leads to path traversal. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 1.1.0 is capable of addressing this issue. The name of the patch is 45364545fc60dc80aadcd4379f08042d3d3d292e. Upgrading the affected component is advised.

Published: 4/29/2026, 8:16:31 PM
Last modified: 4/29/2026, 9:16:21 PM

References

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