Track Orders for WooCommerce < 1.2.7 - Unauthenticated PII Disclosure via 'email' Parameter

The Track Orders for WooCommerce WordPress plugin before 1.2.7 does not verify ownership of an order before returning its billing details, allowing unauthenticated attackers to obtain a customer's name, email address, phone number, postal address and order history by supplying that customer's email address.