High 8.1Published Mar 6, 2026

CVE-2026-29091Locutus brings stdlibs of other programming languages to JavaScript for educational purposes.

Updated under an hour ago (2026-10-19 08:23 UTC)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 8.1 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-95, CWE-94
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jul 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

locutus locutus locutus:locutus	before 3.0.0	NVD

References

https://github.com/locutusjs/locutus/commit/977a1fb169441e35996a1d2465b512322de500adpatch
https://github.com/locutusjs/locutus/security/advisories/GHSA-fp25-p6mj-qqg6exploit, mitigation, vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-29091
https://bugzilla.redhat.com/show_bug.cgi?id=2445262
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29091.json

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.