CVE-2026-11773: Masteriyo Lms – Lms Course Builder, Quizzes & Certificates

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

The Masteriyo LMS – LMS Course Builder, Quizzes & Certificates plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.2.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with student-level access and above, to modify the description (post content) of arbitrary course announcements authored by instructors or administrators.

Affected products

• Masteriyo Masteriyo Lms – Lms Course Builder, Quizzes & Certificates: up to and including 2.2.1

Published 2026-06-27. Last modified 2026-06-29.