WishList Member X < 3.26.7 - Unauthenticated Arbitrary SQL Execution

Description

The WishList Member X plugin for WordPress is vulnerable SQL Injection in versions up to, and including, 3.25.1 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 run arbitrary SQL queries that can be used to extract sensitive information from the database and inject new information.