MasterStudy LMS exposes other instructors' quiz answers
MasterStudy LMS before 3.7.46 does not verify ownership of quiz-question identifiers. An authenticated instructor can read questions belonging to other instructors, including correct answers and explanations.
- Component
- MasterStudy LMS WordPress Plugin
- Plugin slug
masterstudy-lms-learning-management-system- Affected
- < 3.7.46
- Safe version
3.7.46- Published
- Sep 02, 2026
This CVE was published Sep 02, 2026 and is one of 29 known issues for this plugin.
Update, patch or deactivate.
Update to MasterStudy LMS 3.7.46 or later and audit instructor access to quiz content.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.46 does not properly verify ownership of quiz question identifiers, allowing users with instructor access to read other instructors' quiz questions, including the correct answers and explanations.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N