Masteriyo LMS AJAX action permits forced logout of arbitrary users
Masteriyo LMS before 2.3.1 exposes an AJAX session-clear action without correctly authenticating the requester or authorizing the target account. An unauthenticated attacker can force any user, including an administrator, out of WordPress by submitting that user's target identifier to the vulnerable action. The CNA record does not disclose the AJAX action, target parameter or session-clearing function.
- Component
- Masteriyo LMS
- Plugin slug
masteriyo-lms- Affected
- < 2.3.1
- Safe version
2.3.1- Published
- Jul 27, 2026
This CVE was published Jul 27, 2026 and is one of 2 known issues for this plugin.
Update, patch or deactivate.
Update Masteriyo LMS to 2.3.1 or later. Review AJAX request logs for repeated session-clear attempts and investigate unexpected administrator logout reports.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical 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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N