YITH WooCommerce Product Add-Ons <= 4.3.0 - Authenticated(Shop Manager+) PHP Object Injection

The YITH WooCommerce Product Add-Ons plugin for WordPress is vulnerable to PHP Object Injection in all versions up to 4.3.1 (exclusive) via deserialization of untrusted input in the 'save_addon' function. This makes it possible for authenticated attackers, with Shop Manager access and above, 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.