PHPList Edit Subscription index.php sql injection

A vulnerability was found in PHPList 3.2.6 and classified as critical. This issue affects some unknown processing of the file /lists/index.php of the component Edit Subscription. The manipulation leads to sql injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 3.3.1 is able to address this issue. It is recommended to upgrade the affected component.