Ticket #17847: 18320.diff

wp-includes/kses.php

@@ -740 +740 @@
                 switch ($mode) {
                         case 0 : # attribute name, href for instance
 
-                                if (preg_match('/^([-a-zA-Z]+)/', $attr, $match)) {
+                                if (preg_match('/^([-a-zA-Z:]+)/', $attr, $match)) {
                                         $attrname = $match[1];
                                         $working = $mode = 1;
-                                        $attr = preg_replace('/^[-a-zA-Z]+/', '', $attr);
+                                        $attr = preg_replace('/^[-a-zA-Z:]+/', '', $attr);
                                 }
 
                                 break;