CVE-2026-5327

MEDIUM

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

Title source: cna
STIX 2.1

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.

References (6)

Core 6
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-354658 | efforthye fast-filesystem-mcp index.ts handleGetDiskUsage command injection
https://vuldb.com/vuln/354658
Signature, Permissions Required signature permissions-required
VDB-354658 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/354658/cti
Third Party Advisory third-party-advisory
Submit #780776 | efforthye fast-filesystem-mcp <= 3.5.1 Command Injection
https://vuldb.com/submit/780776

Scores

CVSS v3 6.3
EPSS 0.0111
EPSS Percentile 61.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-74 CWE-77
Status published
Products (3)
efforthye/fast-filesystem-mcp 3.5.0
efforthye/fast-filesystem-mcp 3.5.1
npm/fast-filesystem-mcp 0npm
Published Apr 02, 2026
Tracked Since Apr 02, 2026