Language: PHP
Label: safe
CWE: CWE-79 \u2014 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Code:
            $part = strtolower(trim($part));
            if (!isset($allowed[$part])) {
                continue;
            }
            $ret_lookup[$part] = true;
        }