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:
            $this->emitToken(
                array(
                    'type' => self::CHARACTR,
                    'data' => $char
                )
            );

            /* U+003C LESS-THAN SIGN (<) */
        } elseif ($char === '<' && ($this->content_model === self::PCDATA ||