JS Help Desk < 2.8.2 - Unauthenticated SQL Injection via email and trackingid

Description

The JS Help Desk – Best Help Desk & Support Plugin plugin for WordPress is vulnerable to SQL Injection via the ‘email' and 'trackingid' parameters in all versions up to 2.8.2 (exclusive) 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.