Better Search Replace <= 1.4 - Authenticated (Administrator+) SQL Injection

The plugin Better Search Replace for WordPress is vulnerable to SQL Injection in versions up to, and including, 1.4. This is due to lack of sanitization of user input in the construction of a database query. This makes it possible for authenticated attackers with administrator-level accounts to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.