BuddyPress <= 14.5.0 - Subscriber+ PHP Object Injection via XProfile Field Data

Description

The plugin is vulnerable to Deserialization of Untrusted Data due to the `bp_unserialize_profile_field()` function using `@unserialize()` without the `allowed_classes` parameter on user-controlled XProfile field data. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary PHP objects via XProfile textbox fields, which could lead to remote code execution if a suitable POP chain is available in the WordPress environment.