CVE-2026-5327
efforthye fast-filesystem-mcp index.ts handleGetDiskUsage command injection
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 5.3EPSS 1.1%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
02 Apr 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
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
Affected products
efforthye · fast-filesystem-mcppublic PoCs found — 1
cve_referencegithub.com/user-attachments/files/25822878/fast-filesystem-mcp_bug.pdfunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Want to know if your infrastructure is exposed to this?
Talk to TrueHacking →