The KiviCare WordPress plugin before 4.5.2 does not restrict the roles assignable through its unauthenticated registration endpoint, allowing unauthenticated attackers to create an active, privileged clinic-staff (doctor) account with full access to patient records, billing and clinic data.
https://wpscan.com/vulnerability/24951a75-46e7-44f9-947b-070ca2f2b244/