MasterStudy LMS <= 3.7.49 - Unauthenticated (Subscriber+) Unauthorized Course Enrollment

The MasterStudy LMS plugin for WordPress is vulnerable to unauthorized course access in all versions up to, and including, 3.7.49. This is due to missing verification that the caller actually holds the supplied membership plan and that the requested course is permitted under that plan's category and quota restrictions. This makes it possible for authenticated attackers, with subscriber-level access and above, to enroll themselves into paid courses that are outside their membership plan's permitted categories and beyond the enrollment quota their plan allows.

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: MasterStudy LMS WordPress Plugin 3.7.50 closes this, and updating the plugin is the step that ends it.

• Login Security
• Alerts