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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00924.

Exploitation poc

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Efforthye
  • Fast-filesystem-mcp

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References
Link Providers
https://github.com/efforthye/fast-filesystem-mcp/ cve-icon cve-icon
https://github.com/efforthye/fast-filesystem-mcp/issues/15 cve-icon cve-icon
https://github.com/user-attachments/files/25822878/fast-filesystem-mcp_bug.pdf cve-icon cve-icon
https://vuldb.com/submit/780776 cve-icon cve-icon
https://vuldb.com/vuln/354658 cve-icon cve-icon
https://vuldb.com/vuln/354658/cti cve-icon cve-icon
History

Thu, 02 Apr 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 02 Apr 2026 12:00:00 +0000

Type Values Removed Values Added
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.
Title efforthye fast-filesystem-mcp index.ts handleGetDiskUsage command injection
First Time appeared Efforthye
Efforthye fast-filesystem-mcp
Weaknesses CWE-74
CWE-77
CPEs cpe:2.3:a:efforthye:fast-filesystem-mcp:*:*:*:*:*:*:*:*
Vendors & Products Efforthye
Efforthye fast-filesystem-mcp
References
Metrics cvssV2_0

{'score': 6.5, 'vector': 'AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:C'}

cvssV3_0

{'score': 6.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C'}

cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C'}

cvssV4_0

{'score': 5.3, 'vector': '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-04-02T13:23:04.196Z

Reserved: 2026-04-01T13:27:15.115Z

Link: CVE-2026-5327

cve-icon Vulnrichment

Updated: 2026-04-02T13:22:56.281Z

cve-icon NVD

Status : Received

Published: 2026-04-02T12:16:21.260

Modified: 2026-04-02T12:16:21.260

Link: CVE-2026-5327

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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