CVE-2026-13332 Masteriyo LMS < 2.3.1 - Unauthenticated Arbitrary User Session Termination (Denial of Service)
Unauthenticated attackers can force-logout any user, including administrators, by exploiting missing authorization checks in an AJAX action.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-13332?
CVE-2026-13332 is a critical missing authorization vulnerability in Unknown Masteriyo LMS, published on 27 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Masteriyo LMS WordPress plugin before 2.3.1 does not correctly verify authorization on an unauthenticated AJAX action used to clear user sessions, allowing unauthenticated attackers to terminate the active sessions (force-logout) of any user on the site, including administrators.
Weakness: CWE-287
Which versions are affected by CVE-2026-13332?
How do I fix CVE-2026-13332?
No fix has been published for CVE-2026-13332 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-2026-13332 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13332 exists.
Sources
Also known as GHSA-h98r-h4wc-7hjr.