Ticket #21679: 21679.patch

wp-admin/includes/media.php

@@ -209 +209 @@
                         $time = $post->post_date;
         }
 
-        $name = $_FILES[$file_id]['name'];
-        $file = wp_handle_upload($_FILES[$file_id], $overrides, $time);
+        $file = wp_handle_upload( $_FILES[ $file_id ], $overrides, $time );
+        $name = wp_basename( $file['file'] );
 
         if ( isset($file['error']) )
                 return new WP_Error( 'upload_error', $file['error'] );