CVE-2026-82850 Masteriyo LMS < 3.4.2 - Subscriber+ Quiz Answer Key Disclosure
Authenticated users can retrieve correct quiz answers for any course, including those they are not enrolled in, due to insufficient access controls.
- 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-2026-82850?
CVE-2026-82850 is a medium-severity vulnerability in Unknown Masteriyo LMS, published on 24 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Masteriyo LMS WordPress plugin before 3.4.2 does not restrict access to quiz answer keys, allowing any authenticated user, such as a student, to retrieve the correct answers for any quiz on the site, including quizzes in courses they are not enrolled in. The redaction that hides them is applied only to a fixed list of question types, so the answers to every other type are returned in full to anyone able to view the questions.
Weakness: CWE-200
Which versions are affected by CVE-2026-82850?
How do I fix CVE-2026-82850?
No fix has been published for CVE-2026-82850 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-82850 being exploited?
There is no known exploitation of CVE-2026-82850 in the wild and no public exploit code.
Sources
Also known as GHSA-9g29-72xr-rc7p.