What’s Vulnerable › Vulnerabilities

CVE-2026-11773: Masteriyo LMS <= 2.2.1 - Missing Authorization to Authenticated (Student+) Arbitrary Course Announcement Modification

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-27 · updated 2026-06-29
• Weakness: CWE-862

Description

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 LMS – LMS Course Builder, Quizzes & Certificates: through 2.2.1

References

• https://plugins.trac.wordpress.org/browser/learning-management-system/tags/2.1.8/addons/course-announcement/Controllers/CourseAnnouncementController.php#L619
• https://plugins.trac.wordpress.org/browser/learning-management-system/tags/2.1.8/addons/course-announcement/Controllers/CourseAnnouncementController.php#L782
• https://plugins.trac.wordpress.org/browser/learning-management-system/tags/2.2.1/addons/course-announcement/Controllers/CourseAnnouncementController.php#L619
• https://plugins.trac.wordpress.org/browser/learning-management-system/tags/2.2.1/addons/course-announcement/Controllers/CourseAnnouncementController.php#L782
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3583519%40learning-management-system&new=3583519%40learning-management-system&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/5780d762-2313-4c81-be02-99543359d824?source=cve

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