MasterStudy LMS instructors can enumerate other customers' billing details
MasterStudy LMS before 3.7.42 does not restrict an instructor to orders they are entitled to view. An instructor can enumerate order IDs and retrieve another customer's name, email address, phone number, and postal address.
- Component
- MasterStudy LMS WordPress Plugin
- Plugin slug
masterstudy-lms-learning-management-system- Affected
- < 3.7.42
- Safe version
3.7.42- Published
- Aug 29, 2026
This CVE was published Aug 29, 2026 and is one of 31 known issues for this plugin.
Update, patch or deactivate.
Update to 3.7.42 or later and assess order records and instructor activity for unauthorized access to customer information.
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 3.7.42 does not correctly restrict access to order information, allowing any user with the instructor role to read other users' order billing details, including name, email address, phone number and postal address, by enumerating order IDs.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N