CVE-2024-21891

Name: CVE-2024-21891
Creator: NVD / NIST
Published: 2024-02-20T02:15:50.347+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.24%

Last modified Jun 17, 2026

CVE-2024-21891 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Node.js depends on multiple built-in utility functions to normalize paths provided to node:fs functions, which can be overwitten with user-defined implementations leading to filesystem permission model bypass through path traversal attack. This vulnerability affects all users using the experimental permission model in Node.js 20 and Node.js 21. Please note that at the time this CVE was issued, the permission model is an experimental feature of Node.js.. EPSS estimates a 1.24% chance of exploitation in the next 30 days.

Description

Node.js depends on multiple built-in utility functions to normalize paths provided to node:fs functions, which can be overwitten with user-defined implementations leading to filesystem permission model bypass through path traversal attack. This vulnerability affects all users using the experimental permission model in Node.js 20 and Node.js 21. Please note that at the time this CVE was issued, the permission model is an experimental feature of Node.js.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.24%

65.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nodejs	Node.Js	>= 20.0.0, < 20.11.1
Nodejs	Node.Js	>= 21.0.0, < 21.6.2

References

http://www.openwall.com/lists/oss-security/2024/03/11/1Mailing List, Third Party Advisory
https://hackerone.com/reports/2259914Issue Tracking, Third Party Advisory
https://security.netapp.com/advisory/ntap-20240315-0005/Third Party Advisory
http://www.openwall.com/lists/oss-security/2024/03/11/1Mailing List, Third Party Advisory
https://hackerone.com/reports/2259914Issue Tracking, Third Party Advisory
https://security.netapp.com/advisory/ntap-20240315-0005/Third Party Advisory

Timeline

Published: Feb 20, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-21891?

How severe is CVE-2024-21891?

CVE-2024-21891 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.24% probability of exploitation in the next 30 days.

How do I fix CVE-2024-21891?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-21891?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST