program/lib/Roundcube/html.php
@@ -283,10 +283,9 @@ continue; } // ignore not allowed attributes // ignore not allowed attributes, except data-* if (!empty($allowed)) { $is_data_attr = @substr_compare($key, 'data-', 0, 5) === 0; if (!isset($allowed_f[$key]) && (!$is_data_attr || !isset($allowed_f['data-*']))) { if (!isset($allowed_f[$key]) && @substr_compare($key, 'data-', 0, 5) !== 0) { continue; } }