Ticket #20214: 20214.patch

wp-includes/comment.php

@@ -1812 +1812 @@
         do_action_ref_array( 'pre_ping', array( &$post_links, &$pung, $post_ID ) );
 
         foreach ( (array) $post_links as $pagelinkedto ) {
+                $url = parse_url( $pagelinkedto );
+                if ( !empty( $url['fragment'] ) ) {
+                        unset( $url['fragment'] );
+                        $pagelinkedto = implode( '', $url );
+                }
                 $pingback_server_url = discover_pingback_server_uri( $pagelinkedto );
 
                 if ( $pingback_server_url ) {