CVE-2026-29091

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.

Weakness classification

• security-advisories@github.com: CWE-95
• 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-94

Primary references

• security-advisories@github.com — Patch
• security-advisories@github.com — Exploit, Mitigation, Vendor Advisory
• 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
• 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
• 134c704f-9b21-4f2e-91b3-4a467353bcc0 — Exploit, Mitigation, Vendor Advisory
• 0b0ca135-0b70-47e7-9f44-1890c2a1c46c