The ShipStation.com plugin 1.0 for CS-Cart allows remote attackers to obtain sensitive information (via action=export) because a typo results in a successful comparison of a blank password and NULL.

The ShipStation.com plugin 1.1 and earlier for CS-Cart allows remote attackers to insert arbitrary information into the database (via action=shipnotify) because access to this endpoint is completely unchecked. The attacker must guess an order number.