medium6.3
CVE-2026-5327
fast-filesystem-mcp is vulnerable to command injection through handleGetDiskUsage function
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | fast-filesystem-mcp | <= 3.5.0 | none recorded |
Affected products
| Product | Affected versions |
|---|---|
| Efforthye Fast-Filesystem-Mcp | before 3.5.1. |
Versions were read from the advisory text. No structured product data has been published for this record yet.
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/efforthye/fast-filesystem-mcp/
- https://github.com/efforthye/fast-filesystem-mcp/issues/15
- https://github.com/user-attachments/files/25822878/fast-filesystem-mcp_bug.pdf
- https://vuldb.com/submit/780776
- https://vuldb.com/vuln/354658
- https://vuldb.com/vuln/354658/cti
- https://github.com/advisories/GHSA-5226-3rvg-hp4x
- https://nvd.nist.gov/vuln/detail/CVE-2026-5327
- https://github.com/efforthye/fast-filesystem-mcp