A flaw was found in Locutus, a JavaScript library that provides standard library functions. The `create_function` function in Locutus passes user-supplied arguments and code directly to the JavaScript `Function` constructor without proper sanitization. This vulnerability allows a remote attacker to execute arbitrary code within the application, potentially leading to full system compromise or data manipulation.

Locutus brings stdlibs of other programming languages to JavaScript for educational purposes. Prior to 3.0.14, the create_function(args, code) function passes both parameters directly to the Function constructor without any sanitization, allowing arbitrary code execution. This is distinct from CVE-2026-29091 which was call_user_func_array using eval() in v2.x. This finding affects create_function using new Function() in v3.x. This vulnerability is fixed in 3.0.14.

Locutus vulnerable to RCE via unsanitized input in create_function()