GitHub Advisoryadvisory · npm

GHSA-5226-3rvg-hp4x fast-filesystem-mcp is vulnerable to command injection through handleGetDiskUsage function

LOW Published 2026-04-02 Modified 2026-04-04 Official page ↗
Aliases
CVE-2026-5327
Ecosystem
npm
Packages
fast-filesystem-mcp
Severity
Low
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Weaknesses
CWE-74
Reviewed
2026-04-04

Affected packages

• npm fast-filesystem-mcp: <= 3.5.0 (no fix yet)

Description

A security flaw has been discovered in efforthye fast-filesystem-mcp up to 3.5.1. The affected element is the function handleGetDiskUsage of the file src/index.ts. Performing a manipulation results in command injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Related

Alias · CVE (1)

  • CVE-2026-5327 A security flaw has been discovered in efforthye fast-filesystem-mcp up to 3.5.1. vulnerability

Weakness · CWE (1)

  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component weakness

References