Language: PHP
Label: vulnerable
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 load_comment_form_block( $params ) {
		comment_form( $params[ self::PARAM_ARGS ], $params[ self::PARAM_ID ] );

		if ( ! $this->conf( Base::O_ESI_CACHE_COMMFORM ) ) {
			Control::set_nocache( 'build-in set to not cacheable' );
		}
		else {
			// by default comment form is public
			if ( Vary::has_vary() ) {
				Control::set_private();
				Control::set_no_vary();
			}
		}
	}