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:
    public function getMessage($key)
    {
        if (!$this->_loaded) {
            $this->load();
        }
        if (!isset($this->messages[$key])) {
            return "[$key]";
        }
        return $this->messages[$key];
    }