CVE-2026-5327 MEDIUM

CVE-2026-5327: efforthye fast-filesystem-mcp index.ts handleGetDiskUsage command injection

Vendor Efforthye
Product fast-filesystem-mcp
Weakness CWE-77
Published April 2, 2026
Last update April 2, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS 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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 2, 2026 CVE published
April 2, 2026 Record updated