Ticket #26520: 26520.patch

src/wp-includes/default-widgets.php

@@ -866 +866 @@
                 if ( empty($title) )
                         $title = __('Untitled');
 
-                $desc = str_replace( array("\n", "\r"), ' ', esc_attr( strip_tags( @html_entity_decode( $item->get_description(), ENT_QUOTES, get_option('blog_charset') ) ) ) );
+                $desc = @html_entity_decode( $item->get_description(), ENT_QUOTES, get_option( 'blog_charset' ) );
+                $desc = esc_attr( strip_tags( $desc ) );
+                $desc = trim( str_replace( array( "\n", "\r" ), ' ', $desc ) );
                 $excerpt = wp_html_excerpt( $desc, 360 );
 
                 // Append ellipsis. Change existing [...] to […].