Polylang < 3.8.10 - Editor+ PHP Object Injection

Description

The plugin is vulnerable to PHP Object Injection due to deserialization of untrusted input. This makes it possible for authenticated attackers, with editor-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software. 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.