Masteriyo LMS <= 2.2.1 - Missing Authorization to Authenticated (Student+) Arbitrary Course Announcement Modification
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-11773
- 2026-10-03 Alias added: GHSA-26q5-grw2-6qhj
References
Other 6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5780d762-2313-4c81-be02-99543359d824?source=cve
- 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/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/2.1.8/addons/course-announcement/Controllers/CourseAnnouncementController.php#L782
- 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/changeset?sfp_email=&sfph_mail=&reponame=&old=3583519%40learning-management-system&new=3583519%40learning-management-system&sfp_email=&sfph_mail=
More masteriyo vulnerabilities
- TI-2024-16396 WordPress LMS by Masteriyo plugin <= 1.7.2 - Privilege Escalation vulnerability CVSS 3.1CRITICAL 9.8
- TI-2026-03894 Masteriyo LMS <= 2.1.6 - Missing Authorization to Authenticated (Student+) Privilege Escalation to Administrator CVSS 3.1HIGH 8.8
- TI-2026-44383 WordPress Masteriyo - LMS plugin <= 3.4.0 - PHP Object Injection vulnerability CVSS 3.1HIGH 8.8
- TI-2024-09288 Missing authorization in Masteriyo LMS – Online Course Builder for eLearning, LMS &… CVSS 3.1HIGH 8.8
- TI-2024-28829 WordPress Masteriyo LMS plugin <= 1.11.4 - Broken Access Control vulnerability CVSS 3.1HIGH 7.5
- TI-2024-28892 WordPress Masteriyo LMS plugin <= 1.11.4 - Insecure Direct Object Reference (IDOR) vulnerability CVSS 3.1HIGH 8.1
Sources
- CVE-2026-11773 · CVE Program
- CVE-2026-11773 · NVD
- FIRST EPSS
- GHSA-26q5-grw2-6qhj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences