CVE-2026-82849
Masteriyo LMS < 3.4.2 - Subscriber+ Arbitrary User Course Progress Disclosure via IDOR
- State
- Published
- Severity
- 4.3 Medium
- Published
- Sep 24, 2026
- Updated
- Sep 24, 2026
- Reserved
- Aug 31, 2026
Description
The Masteriyo LMS WordPress plugin before 3.4.2 does not verify that the user making the request owns the course-progress records being returned, allowing any authenticated user, such as a self-registered subscriber, to read another user's learning activity. The ownership check it applies is skipped whenever the requested account is not named with a non-zero value, in which case the records of every learner on the site are returned at once.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N | CISA-ADP |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
Masteriyo LMSUnknown |
|
References
- https://wpscan.com/vulnerability/8114501a-3591-4d8c-b73e-a598756d45d7/exploitvdb-entrytechnical-description
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