CVE-2026-88847 MasterStudy LMS < 3.7.50 - Subscriber+ Lesson Completion Record Creation
Authenticated users can create lesson completion records for courses they are not enrolled in, allowing unauthorized modification of course progress data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-88847?
CVE-2026-88847 is a medium-severity missing authorization vulnerability in Unknown MasterStudy LMS WordPress Plugin, published on 24 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not verify that a user is enrolled in a course before recording lesson completions against it, allowing any authenticated user, such as a subscriber, to create course progress records for courses they have no access to.
Weakness: CWE-862
Which versions are affected by CVE-2026-88847?
How do I fix CVE-2026-88847?
No fix has been published for CVE-2026-88847 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-88847 being exploited?
There is no known exploitation of CVE-2026-88847 in the wild and no public exploit code.
Sources
Also known as GHSA-rfcv-fvw7-7w4h.