Vulnerability-Lookup

CVE-2026-5327 (GCVE-0-2026-5327)

Vulnerability from cvelistv5 – Published: 2026-04-02 11:45 – Updated: 2026-04-02 13:23

Title

efforthye fast-filesystem-mcp index.ts handleGetDiskUsage command injection

Summary

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.

Severity ?

5.3 (Medium)


                        
                          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

6.3 (Medium)


                        
                          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

6.3 (Medium)


                        
                          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

CWE

CWE-77 - Command Injection
CWE-74 - Injection

Assigner

VulDB

References

URL

Tags

	https://vuldb.com/vuln/354658	vdb-entrytechnical-description
	https://vuldb.com/vuln/354658/cti	signaturepermissions-required
	https://vuldb.com/submit/780776	third-party-advisory
	https://github.com/efforthye/fast-filesystem-mcp/…	issue-tracking
	https://github.com/user-attachments/files/2582287…	exploit
	https://github.com/efforthye/fast-filesystem-mcp/	product

Impacted products

	Vendor	Product	Version
	efforthye	fast-filesystem-mcp	Affected: 3.5.0 Affected: 3.5.1 cpe:2.3:a:efforthye:fast-filesystem-mcp::::::::

Credits

Yinci Chen (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-5327

Vulnerability from fkie_nvd - Published: 2026-04-02 12:16 - Updated: 2026-04-03 16:10

Severity ?

6.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Summary

References

	URL	Tags
	cna@vuldb.com	https://github.com/efforthye/fast-filesystem-mcp/
	cna@vuldb.com	https://github.com/efforthye/fast-filesystem-mcp/issues/15
	cna@vuldb.com	https://github.com/user-attachments/files/25822878/fast-filesystem-mcp_bug.pdf
	cna@vuldb.com	https://vuldb.com/submit/780776
	cna@vuldb.com	https://vuldb.com/vuln/354658
	cna@vuldb.com	https://vuldb.com/vuln/354658/cti

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
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  ],
  "id": "CVE-2026-5327",
  "lastModified": "2026-04-03T16:10:52.680",
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    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/780776"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/354658"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/354658/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-74"
        },
        {
          "lang": "en",
          "value": "CWE-77"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Primary"
    }
  ]
}

GHSA-5226-3RVG-HP4X

Vulnerability from github – Published: 2026-04-02 12:31 – Updated: 2026-04-04 05:39

Summary

fast-filesystem-mcp is vulnerable to command injection through handleGetDiskUsage function

Details

Severity ?

6.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

2.1 (Low)


                  
                    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

Show details on source website

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "fast-filesystem-mcp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "3.5.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-5327"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-74"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-04T05:39:06Z",
    "nvd_published_at": "2026-04-02T12:16:21Z",
    "severity": "LOW"
  },
  "details": "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.",
  "id": "GHSA-5226-3rvg-hp4x",
  "modified": "2026-04-04T05:39:06Z",
  "published": "2026-04-02T12:31:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5327"
    },
    {
      "type": "WEB",
      "url": "https://github.com/efforthye/fast-filesystem-mcp/issues/15"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/efforthye/fast-filesystem-mcp"
    },
    {
      "type": "WEB",
      "url": "https://github.com/user-attachments/files/25822878/fast-filesystem-mcp_bug.pdf"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/780776"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/354658"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/354658/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "fast-filesystem-mcp is vulnerable to command injection through handleGetDiskUsage function"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-5327 (GCVE-0-2026-5327)

FKIE_CVE-2026-5327

GHSA-5226-3RVG-HP4X

Tags

Sightings

Nomenclature