The Motors theme for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 5.6.67. This is due to the theme not properly validating a user's identity prior to updating their password. This makes it possible for unauthenticated attackers to change arbitrary user passwords, including those of administrators, and leverage that to gain access to their account.
When setting a new password for a user, the product does not require knowledge of the original password, or using another form of authentication.