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

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

Positive Technologies (AI Summary)

CVSS v2.0

6.5

Medium

Base vector

AV:N/AC:L/Au:S/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions efforthye fast-filesystem-mcp versions up to 3.5.1

Description A security flaw exists in efforthye fast-filesystem-mcp up to version 3.5.1. The handleGetDiskUsage function within the src/index.ts file is susceptible to command injection. This issue is remotely exploitable. The exploit has been publicly released and may be used for attacks.

Recommendations Update efforthye fast-filesystem-mcp to a version later than 3.5.1.

Exploit

Fix

Command Injection

Special Elements Injection

Weakness Enumeration

CWE-77

CWE-74

Related Identifiers

CVE-2026-5327

GHSA-5226-3RVG-HP4X

Affected Products

Fast-Filesystem-Mcp

References · 10

• 🔥❌ https://github.com/user-attachments/files/25822878/fast-filesystem-mcp_bug.pdf · Exploit, Deleted
• https://osv.dev/vulnerability/GHSA-5226-3rvg-hp4x · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-5327 · Security Note
• https://github.com/efforthye/fast-filesystem-mcp · Note
• https://github.com/efforthye/fast-filesystem-mcp/issues/15 · Note
• https://vuldb.com/submit/780776 · Note
• https://twitter.com/CVEnew/status/2039744364465820132 · Twitter Post
• https://twitter.com/cyberbivash/status/2039697434029252731 · Twitter Post
• https://vuldb.com/vuln/354658 · Note
• https://vuldb.com/vuln/354658/cti · Note