Ticket #4723: 4723.patch

wp-includes/kses.php

@@ -318 +318 @@
         # Is there a closing XHTML slash at the end of the attributes?
 
         $xhtml_slash = '';
-        if (preg_match('%\s/\s*$%', $attr))
+        if (preg_match('%(\s?)/\s*$%', $attr, $match)) {
                 $xhtml_slash = ' /';
+                if ( '' == $match[1] )
+                        $attr = rtrim($attr, '/ ') . ' /';
+        }
 
         # Are any attributes allowed at all for this element?