Better Search Replace < 1.4.5 - Unauthenticated PHP Object Injection

Description

The plugin is vulnerable to PHP Object Injection via deserialization of untrusted input. This makes it possible for unauthenticated attackers to inject a PHP Object. No POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.