CVE-2026-5327CWE-74CWE-77

efforthye fast-filesystem-mcp index.ts handleGetDiskUsage command injection

Medium · published April 2, 2026

CVSS v4.0
5.3
EPSS
2%
Percentile
78.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.01817 · 78.5th percentile
Weaknesses
CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'); CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-04-02T11:45Z
EPSS history
Timeline
  • 02 APR 11:45Z
    efforthye fast-filesystem-mcp index.ts handleGetDiskUsage command injection
    cvelistv5