CVE-2026-13332 Masteriyo CVE debrief

Who should care

Administrators and users of the Masteriyo LMS WordPress plugin should be aware of this vulnerability and take necessary actions to protect their sites. The vulnerability can be exploited by unauthenticated attackers, which makes it a high-risk issue for sites that use the plugin. Security teams and vulnerability management teams should prioritize patching or mitigating this vulnerability.

Technical summary

The Masteriyo LMS WordPress plugin before 2.3.1 has an unauthenticated AJAX action that can be used to clear user sessions. This action does not correctly verify authorization, allowing unauthenticated attackers to terminate the active sessions of any user on the site, including administrators. The vulnerability is a result of insufficient authorization checks on the AJAX action. The affected plugin is widely used for learning management systems in WordPress environments.

Defensive priority

High

Recommended defensive actions

• Update the Masteriyo LMS WordPress plugin to version 2.3.1 or later
• Verify that the plugin is properly configured and authorized
• Monitor user sessions and logs for suspicious activity
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-07-27T07:16:24.820Z and has not been modified since then. The NVD entry is currently Received. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the vendor. 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. Evidence is limited to CVE and NVD details.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.