CVE-2026-11773
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk5th percentile - higher than 5% of all known CVEs
Summary
The Masteriyo LMS plugin for WordPress up to version 2.2.1 contains an authorization bypass vulnerability. Authenticated attackers with student-level access or higher can modify the content of course announcements created by instructors or administrators.
Risk Assessment
The risk involves unauthorized modification of course announcements, potentially misleading course participants or compromising the integrity of educational content.
Recommendation
It is recommended to immediately update the Masteriyo LMS plugin to the latest available version that addresses this vulnerability.
Other vulnerabilities in Masteriyo LMS
See all- CVE-2026-65463Medium
The Masteriyo - LMS plugin version 2.3.1 and earlier contains an Insecure Direct Object References (IDOR) vulnerability exploitable by a subscriber. A subscriber can access other users' resources.
- CVE-2026-59513Medium
Masteriyo - LMS plugin version 2.3.0 and earlier is vulnerable to Cross Site Scripting (XSS) from a subscriber level. A subscriber can inject malicious script.
- CVE-2026-73996Critical
Unauthenticated Arbitrary File Upload vulnerability in Masteriyo - LMS plugin versions up to 2.3.2. An attacker without authentication can upload arbitrary files to the server.
- CVE-2026-13332Critical
The Masteriyo LMS WordPress plugin before 2.3.1 does not correctly verify authorization on an unauthenticated AJAX action used to clear user sessions, allowing unauthenticated attackers to terminate the active sessions (force-logout) of any user on the site, including administrators.
- CVE-2026-19712Medium
The Masteriyo LMS WordPress plugin before version 2.3.3 does not sanitize and escape a quiz field before output, and grants instructors the ability to store unfiltered HTML, allowing Stored XSS attacks against any visitor, including administrators. Default single-site installations are affected; multisite or DISALLOW_UNFILTERED_HTML sites are not.
- CVE-2026-42743Medium
Masteriyo - LMS versions up to 2.1.8 contain a vulnerability in authentication that allows unauthorized access.
- CVE-2026-39524High
Masteriyo - LMS versions up to 2.1.5 contain a vulnerability in access control that allows unauthorized access.
- CVE-2026-5167Medium
The Masteriyo LMS plugin for WordPress up to version 2.1.7 has an authorization bypass vulnerability due to insufficient webhook signature verification. Unauthenticated attackers can send fake Stripe webhook events and mark any order as completed without payment.
Original NVD description (English source)
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.