CVE-2026-13169 Eventin CVE debrief

Who should care

Administrators and users of the Eventin WordPress plugin, as well as security teams responsible for monitoring and mitigating vulnerabilities in WordPress plugins, should be aware of this vulnerability and take necessary actions to protect their systems. This includes verifying the version of the plugin, restricting access to event modification, and implementing additional security measures. Furthermore, security teams should review event logs for unauthorized changes and monitor for potential attacks.

Technical summary

The Eventin WordPress plugin before 4.1.21 does not properly verify ownership of events before allowing them to be modified, deleted, or reassigned to a different author. This vulnerability allows users with contributor-level access and above to alter, delete, or take over events created by other users, including administrators. The vulnerability is particularly concerning because it can be exploited by users with relatively low levels of access, potentially leading to unauthorized changes to event data. To address this vulnerability, it is essential to update the Eventin plugin to version 4.1.21 or later and implement additional security measures such as restricting access to event modification and monitoring event logs.

Defensive priority

High-priority defensive actions are required to address this vulnerability, as it allows for unauthorized modification, deletion, or reassignment of events created by other users, including administrators.

Recommended defensive actions

• Verify the version of the Eventin WordPress plugin and update to version 4.1.21 or later if necessary.
• Restrict access to event modification, deletion, and reassignment to authorized users only.
• Monitor event logs for unauthorized changes.
• Implement additional security measures, such as role-based access control and auditing.
• 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.

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further investigation and verification are necessary to fully understand the scope and impact of this vulnerability. The Eventin WordPress plugin before 4.1.21 does not properly verify ownership of events before allowing them to be modified, deleted, or reassigned to a different author. This vulnerability allows users with contributor-level access and above to alter, delete, or take over events created by other users, including administrators. However, the specific technical details and potential attack vectors are not explicitly mentioned in the provided sources. Therefore, defenders should verify the version of the Eventin WordPress plugin, review event logs for unauthorized changes, and implement additional security measures such as role-based access control and auditing.

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.