CVE-2023-4278: Stylemixthemes Masterstudy Lms

High severity, CVSS 7.5. EPSS: 6.2% chance of exploitation in the next 30 days.

The MasterStudy LMS WordPress Plugin WordPress plugin before 3.0.18 does not have proper checks in place during registration allowing anyone to register on the site as an instructor. They can then add courses and/or posts.

Affected products

• Stylemixthemes Masterstudy Lms: before 3.0.18 (fixed in 3.0.18)

Published 2023-09-11. Last modified 2026-06-17.