Description
Various `node:fs` functions allow specifying paths as either strings or `Uint8Array` objects. In Node.js environments, the `Buffer` class extends the `Uint8Array` class. Node.js prevents path traversal through strings (see CVE-2023-30584) and `Buffer` objects (see CVE-2023-32004), but not through non-`Buffer` `Uint8Array` objects.

This is distinct from CVE-2023-32004 which only referred to `Buffer` objects. However, the vulnerability follows the same pattern using `Uint8Array` instead of `Buffer`.

Please note that at the time this CVE was issued, the permission model is an experimental feature of Node.js.
Published: 2023-10-18
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2023-43063 Various `node:fs` functions allow specifying paths as either strings or `Uint8Array` objects. In Node.js environments, the `Buffer` class extends the `Uint8Array` class. Node.js prevents path traversal through strings (see CVE-2023-30584) and `Buffer` objects (see CVE-2023-32004), but not through non-`Buffer` `Uint8Array` objects. This is distinct from CVE-2023-32004 which only referred to `Buffer` objects. However, the vulnerability follows the same pattern using `Uint8Array` instead of `Buffer`. Please note that at the time this CVE was issued, the permission model is an experimental feature of Node.js.
History

Mon, 03 Nov 2025 22:30:00 +0000

Type Values Removed Values Added
References

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00375}

epss

{'score': 0.00385}


Thu, 13 Feb 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Subscriptions

Fedoraproject Fedora
Nodejs Node.js
Redhat Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2025-11-03T21:49:17.572Z

Reserved: 2023-07-28T01:00:12.349Z

Link: CVE-2023-39332

cve-icon Vulnrichment

Updated: 2024-08-02T18:02:06.901Z

cve-icon NVD

Status : Modified

Published: 2023-10-18T04:15:11.330

Modified: 2025-11-03T22:16:25.160

Link: CVE-2023-39332

cve-icon Redhat

Severity : Important

Publid Date: 2023-10-13T00:00:00Z

Links: CVE-2023-39332 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses