Widgets: Add `rel="noopener noreferrer"` to links with `target="_blank"` in the Text and HTML widgets.

Props audrasjb, birgire, mukesh27.
Fixes #46421.


Built from https://develop.svn.wordpress.org/trunk@45143


git-svn-id: http://core.svn.wordpress.org/trunk@44952 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.2-beta1-45142';
+$wp_version = '5.2-beta1-45143';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.

wp-includes/widgets/class-wp-widget-custom-html.php

@@ -143,6 +143,9 @@ class WP_Widget_Custom_HTML extends WP_Widget {
 		/** This filter is documented in wp-includes/widgets/class-wp-widget-text.php */
 		$content = apply_filters( 'widget_text', $instance['content'], $simulated_text_widget_instance, $this );
 
+		// Adds noreferrer and noopener relationships, without duplicating values, to all HTML A elements that have a target.
+		$content = wp_targeted_link_rel( $content );
+
 		/**
 		 * Filters the content of the Custom HTML widget.
 		 *

wp-includes/widgets/class-wp-widget-text.php

@@ -328,6 +328,9 @@ class WP_Widget_Text extends WP_Widget {
 
 		$text = preg_replace_callback( '#<(video|iframe|object|embed)\s[^>]*>#i', array( $this, 'inject_video_max_width_style' ), $text );
 
+		// Adds noreferrer and noopener relationships, without duplicating values, to all HTML A elements that have a target.
+		$text = wp_targeted_link_rel( $text );
+
 		?>
 			<div class="textwidget"><?php echo $text; ?></div>
 		<?php