WP RealEstate <= 1.6.26 - Unauthenticated Privilege Escalation via 'process_register'

The WP RealEstate plugin for WordPress, used by the Homeo theme, is vulnerable to privilege escalation in all versions up to, and including, 1.6.26. This is due to insufficient role restrictions in the 'process_register' function. This makes it possible for unauthenticated attackers to register an account with the Administrator role.