CVE-2026-29091

Name: CVE-2026-29091
Creator: NVD / NIST
Published: 2026-03-06T18:16:20.257+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.63%

Last modified Jun 17, 2026

CVE-2026-29091 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Locutus brings stdlibs of other programming languages to JavaScript for educational purposes. Prior to version 3.0.0, a remote code execution (RCE) flaw was discovered in the locutus project, specifically within the call_user_func_array function implementation. EPSS estimates a 0.63% chance of exploitation in the next 30 days.

Description

Locutus brings stdlibs of other programming languages to JavaScript for educational purposes. Prior to version 3.0.0, a remote code execution (RCE) flaw was discovered in the locutus project, specifically within the call_user_func_array function implementation. The vulnerability allows an attacker to inject arbitrary JavaScript code into the application's runtime environment. This issue stems from an insecure implementation of the call_user_func_array function (and its wrapper call_user_func), which fails to properly validate all components of a callback array before passing them to eval(). This issue has been patched in version 3.0.0.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

0.63%

45.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-95

Affected Software

Vendor	Product	Versions
Locutus	Locutus	< 3.0.0

References

https://github.com/locutusjs/locutus/commit/977a1fb169441e35996a1d2465b512322de500adPatch
https://github.com/locutusjs/locutus/security/advisories/GHSA-fp25-p6mj-qqg6Exploit, Mitigation, Vendor Advisory
https://github.com/locutusjs/locutus/security/advisories/GHSA-fp25-p6mj-qqg6Exploit, Mitigation, Vendor Advisory

Timeline

Published: Mar 6, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-29091?

How severe is CVE-2026-29091?

CVE-2026-29091 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.63% probability of exploitation in the next 30 days.

How do I fix CVE-2026-29091?

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-2026-29091?

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

Scan your code now

Source: NVD / NIST