Ticket #5114: pluggable.php.diff

wp-includes/pluggable.php

@@ -435 +435 @@
         $wpp = parse_url(get_option('home'));
 
         $allowed_hosts = (array) apply_filters('allowed_redirect_hosts', array($wpp['host']), $lp['host']);
+        $allowed_hosts = array_map('strtolower', $allowed_hosts);
 
-        if ( isset($lp['host']) && !in_array($lp['host'], $allowed_hosts) )
+        if ( isset($lp['host']) && !in_array(strtolower($lp['host']), $allowed_hosts) )
                 $location = get_option('siteurl') . '/wp-admin/';
 
         wp_redirect($location, $status);