CVE-2026-84901: Eventin < 4.1.22 - Contributor+ Site Homepage Hijack and Event Taxonomy Manipulation via Missing Authorization

Q: Which users can exploit this issue?

Any authenticated user with contributor-level access or higher can exploit the affected REST routes. The issue does not require administrator privileges.

Q: What changes could an attacker make?

An eligible user can set the site front page to an event they do not own. They can also create, modify, or delete global event and speaker taxonomy terms outside their intended permissions.

Q: Are unauthenticated visitors affected?

The provided information identifies contributor-level access or above as the required access level. It does not indicate that unauthenticated attackers can use the vulnerable routes.

Published Sep 5, 2026

Updated

The Eventin WordPress plugin before 4.1.22 does not properly check authorization on several of its event-management REST routes, allowing users with contributor-level access and above to change the site's front-page setting to an event they do not own and to create, edit and delete global event and speaker taxonomy terms they should not be able to manage.

Affected Software

1 affected component

WordPress plugin Eventin<4.1.22

Event History

Sep 5, 2026

CVE Published

via MITRE·06:00 AM

Data Sourced

via MITRE·06:00 AM

DescriptionWeakness

Frequently Asked Questions

Which users can exploit this issue?

Any authenticated user with contributor-level access or higher can exploit the affected REST routes. The issue does not require administrator privileges.

What changes could an attacker make?

An eligible user can set the site front page to an event they do not own. They can also create, modify, or delete global event and speaker taxonomy terms outside their intended permissions.

Are unauthenticated visitors affected?

The provided information identifies contributor-level access or above as the required access level. It does not indicate that unauthenticated attackers can use the vulnerable routes.