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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.

PUBLISHED Reserved 2026-03-03 | Published 2026-03-06 | Updated 2026-03-06 | Assigner GitHub_M




HIGH: 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')

Product status

< 3.0.0
affected

References

github.com/...ocutus/security/advisories/GHSA-fp25-p6mj-qqg6 exploit

github.com/...ocutus/security/advisories/GHSA-fp25-p6mj-qqg6

github.com/...ommit/977a1fb169441e35996a1d2465b512322de500ad

cve.org (CVE-2026-29091)

nvd.nist.gov (CVE-2026-29091)

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