ShopSmart Loyalty for WooCommerce <= 1.0.0 - Unauthenticated Sensitive Information Disclosure via shopsmart_check_phone

The ShopSmart Loyalty for WooCommerce WordPress plugin through 1.0.0 does not perform any authorization or ownership check on a phone-number lookup exposed to unauthenticated users, allowing anyone who knows a customer's phone number to retrieve that customer's loyalty profile, including name, email, and account balance.