Ticket #14910: sanitize_key-for-taxonomies-2.patch

wp-includes/taxonomy.php

@@ -346 +346 @@
         unset( $args['capabilities'] );
 
         $args['name'] = $taxonomy;
-        $args['object_type'] = (array) $object_type;
+        $args['object_type'] = is_array($object_type) ? array_map('sanitize_key', $object_type) : (array) sanitize_key($object_type);
 
         $args['labels'] = get_taxonomy_labels( (object) $args );
         $args['label'] = $args['labels']->name;