WP Activity Log Premium <= 4.6.4 - Authenticated (Subscriber+) SQL Injection

The WP Activity Log Premium plugin for WordPress is vulnerable to SQL Injection via the entry->roles parameter in all versions up to, and including, 4.6.4 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers with subscriber privileges to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. One demonstrated attack included the injection of a PHP Object.