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:
            foreach ($token['attr'] as $attr) {
                if (!$this->stack[0]->hasAttribute($attr['name'])) {
                    $this->stack[0]->setAttribute($attr['name'], $attr['value']);
                }
            }