CVE-2026-81342 MasterStudy LMS < 3.7.43 - Unauthenticated Open Redirect
Unauthenticated attackers can redirect users to arbitrary external URLs via an unvalidated parameter during registration in the MasterStudy LMS plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-81342?
CVE-2026-81342 is a medium-severity vulnerability in Unknown MasterStudy LMS WordPress Plugin, published on 29 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.43 does not validate a redirect parameter supplied during user registration before using it, allowing unauthenticated attackers to redirect users to arbitrary external URLs.
Weakness: CWE-601
Which versions are affected by CVE-2026-81342?
How do I fix CVE-2026-81342?
No fix has been published for CVE-2026-81342 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-81342 being exploited?
There is no known exploitation of CVE-2026-81342 in the wild and no public exploit code.
Sources
Also known as GHSA-368m-gh85-cq79.