Comic Book Management System < 2.2.0 - Authenticated (Administrator+) SQL Injection

The Comic Book Management System plugin for WordPress is vulnerable to SQL Injection in versions up to, and including, 2.2.0 due to insufficient escaping on the 'id' parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with administrator-level privileges or higher, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.