What’s Vulnerable › Vulnerabilities
CVE-2023-39332
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 2.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2023-10-18 · updated 2026-06-17
- Weakness: CWE-22
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.
Affected products
- Fedoraproject Fedora: 39
- Node.js: from 20.0.0 before 20.8.0 — fixed in 20.8.0
How to fix
Upgrade to a fixed version: Node.js 20.8.0. Check the vendor advisory for mitigations.
References
- https://hackerone.com/reports/2199818
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/
- https://security.netapp.com/advisory/ntap-20231116-0009/
- https://hackerone.com/reports/2199818
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/
- https://security.netapp.com/advisory/ntap-20231116-0009/
- https://security.netapp.com/advisory/ntap-20241108-0002/
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