GZ Scripts Time Slot Booking Calendar PHP load.php cross site scripting

A vulnerability was found in GZ Scripts Time Slot Booking Calendar PHP 1.8. It has been declared as problematic. This vulnerability affects unknown code of the file /load.php. The manipulation of the argument first_name/second_name/phone/address_1/country leads to cross site scripting. The attack can be initiated remotely. The identifier of this vulnerability is VDB-233296. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.