Winrace

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.6.11.8 due to the plugin not properly verifying that a user is authorized to perform an action via the bulk appointments REST API endpoint. This makes it possible for unauthenticated attackers to modify arbitrary appointment records including customer PII, payment status, and meeting URL fields, and to expose full customer PII from existing appointment records via the bulk endpoint response. The public nonce is a static, user-independent value present in the HTML source of any page hosting the [ssa booking] shortcode, meaning any visitor who has viewed such a page can obtain it and target any appointment in the system without authentication.

**Name of the Vulnerable Software and Affected Versions** LearnPress – WordPress LMS Plugin for Create and Sell Online Courses versions prior to 4.3.6 **Description** Improper handling of user-supplied request parameters in the REST API endpoint allows authenticated attackers with subscriber-level access and above to bypass payment requirements. The issue occurs because an unsanitized parameter array is passed to the `add to cart()` function, where `array merge()` enables attacker-controlled values to overwrite hardcoded defaults. By supplying a `quantity` value of zero, an attacker can cause the order total to be calculated as $0, allowing them to enroll in paid courses for free. **Recommendations** Update to a version later than 4.3.5.