CVE-2026-29091
Locutus: Remote Code Execution (RCE) in locutus call_user_func_array due to Code Injection
- State
- Published
- Severity
- 8.1 High
- Published
- Mar 6, 2026
- Updated
- Jul 15, 2026
- Reserved
- Mar 3, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | GitHub_M |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
locutuslocutusjs |
|
References
- https://github.com/locutusjs/locutus/security/advisories/GHSA-fp25-p6mj-qqg6
- https://github.com/locutusjs/locutus/commit/977a1fb169441e35996a1d2465b512322de500ad
- https://access.redhat.com/security/cve/CVE-2026-29091vdb-entry
- RHBZ#2445262issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29091.json
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