TI WooCommerce Wishlist <= 2.8.2 - Unauthenticated SQL Injection via lang parameters

The TI WooCommerce Wishlist WordPress plugin through 2.8.2 is vulnerable to SQL Injection due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.