CVE-2026-81200

MasterStudy LMS < 3.7.42 - Instructor+ Cross-Tenant Order Billing PII Disclosure via IDOR

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.

Affected

MasterStudy LMS WordPress Plugin

CVSS v3.1 CNA

2.7 LOWCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

EPSS

0.30% chance of exploitation in the next 30 days, 21st percentile

Published

2026-08-29

Updated

2026-08-30

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/1a4db76f-7043-4f9e-a584-17151d008ab1/

References

• CVE Record
• NVD entry