PT-2026-29725 · Efforthye · Fast-Filesystem-Mcp

Yinci Chen · Published 2026-04-02 · Updated 2026-04-02 · CVE-2026-5327

Mitre

CVSS v3.1

6.3

Medium

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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.

Exploit

Fix

Command Injection

Special Elements Injection

Weakness Enumeration

CWE-77

CWE-74

Related Identifiers

CVE-2026-5327

Affected Products

Fast-Filesystem-Mcp

References · 7

• 🔥 https://github.com/user-attachments/files/25822878/fast-filesystem-mcp_bug.pdf · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-5327 · Security Note
• https://vuldb.com/vuln/354658/cti · Note
• https://github.com/efforthye/fast-filesystem-mcp/issues/15 · Note
• https://vuldb.com/vuln/354658 · Note
• https://vuldb.com/submit/780776 · Note
• https://github.com/efforthye/fast-filesystem-mcp · Note