Ticket #18395: patch.diff

wp-includes/default-filters.php

@@ -60 +60 @@
 foreach ( array( 'pre_comment_author_url', 'pre_user_url', 'pre_link_url', 'pre_link_image',
         'pre_link_rss', 'pre_post_guid' ) as $filter ) {
         add_filter( $filter, 'wp_strip_all_tags' );
-        add_filter( $filter, 'esc_url_raw'       );
+        if ($filter != 'pre_post_guid')
+                add_filter( $filter, 'esc_url_raw'       );
         add_filter( $filter, 'wp_filter_kses'    );
 }