PHPList Subscribe Persistent cross site scriting

A vulnerability, which was classified as problematic, has been found in PHPList 3.2.6. This issue affects some unknown processing of the file /lists/admin/ of the component Subscribe. The manipulation leads to cross site scripting (Persistent). The attack may be initiated remotely. Upgrading to version 3.3.1 is able to address this issue. It is recommended to upgrade the affected component.