Appointment and Event Booking Calendar for WordPress – Amelia <= 1.0.47 - Information Disclosure and SMS Spam

The Amelia WordPress plugin before 1.0.48 does not have proper authorisation when handling Amelia SMS service, allowing any customer to send paid test SMS notification as well as retrieve sensitive information about the admin, such as the email, account balance and payment history. A malicious actor can abuse this vulnerability to drain out the account balance by keep sending SMS notification.