Ticket #14514: 14514.patch

wp-includes/media.php

@@ -1156 +1156 @@
                 $rawattr = $attr;
                 $attr = wp_parse_args( $attr, wp_embed_defaults() );
 
+                // kses converts & into & and we need to undo this
+                // See http://core.trac.wordpress.org/ticket/11311
+                $url = str_replace( '&', '&', $url );
+
                 // Look for known internal handlers
                 ksort( $this->handlers );
                 foreach ( $this->handlers as $priority => $handlers ) {