CVE-2026-11773: Masteriyo LMS <= 2.2.1 - Missing Authorization to Authenticated (Student+) Arbitrary Course Announcement Modification
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 Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-11773?
The severity of CVE-2026-11773 is rated as medium with a CVSS score of 4.3.
How do I fix CVE-2026-11773?
To fix CVE-2026-11773, update the Masteriyo LMS plugin to version 2.2.2 or later.
What type of vulnerability is CVE-2026-11773?
CVE-2026-11773 is an authorization bypass vulnerability that allows authenticated users to modify course announcements.
Which versions of Masteriyo LMS are affected by CVE-2026-11773?
CVE-2026-11773 affects all versions of Masteriyo LMS up to and including version 2.2.1.
Can CVE-2026-11773 lead to data loss?
CVE-2026-11773 may allow unauthorized modification of course announcements but does not directly result in data loss.