CVE-2026-5327 | THREATINT

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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.

PUBLISHED Reserved 2026-04-01 | Published 2026-04-02 | Updated 2026-04-02 | Assigner VulDB

MEDIUM: 5.3CVSS: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

MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C

MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C

6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:C

Problem types

Command Injection

Injection

Product status

3.5.0
affected

3.5.1
affected

Timeline

2026-04-01:	Advisory disclosed
2026-04-01:	VulDB entry created
2026-04-01:	VulDB entry last update

Credits

Yinci Chen (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/354658 (VDB-354658 | efforthye fast-filesystem-mcp index.ts handleGetDiskUsage command injection) vdb-entry technical-description

vuldb.com/vuln/354658/cti (VDB-354658 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/780776 (Submit #780776 | efforthye fast-filesystem-mcp <= 3.5.1 Command Injection) third-party-advisory

github.com/efforthye/fast-filesystem-mcp/issues/15 issue-tracking

github.com/…nts/files/25822878/fast-filesystem-mcp_bug.pdf exploit

github.com/efforthye/fast-filesystem-mcp/ product

cve.org (CVE-2026-5327)

nvd.nist.gov (CVE-2026-5327)

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