CVE-2026-4109 Missing authorization in Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered)
Authenticated subscribers can read arbitrary order data including customer PII due to missing authorization checks in the Eventin WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4109?
CVE-2026-4109 is a medium-severity missing authorization vulnerability in arraytics Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered), published on 14 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Eventin – Events Calendar, Event Booking, Ticket & Registration (AI Powered) plugin for WordPress is vulnerable to unauthorized access of data due to a improper capability check on the get_item_permissions_check() function in all versions up to, and including, 4.1.8. This makes it possible for authenticated attackers, with Subscriber-level access and above, to read arbitrary order data including customer PII (name, email, phone) by iterating order IDs.
Weakness: CWE-862
Which versions are affected by CVE-2026-4109?
How do I fix CVE-2026-4109?
No fix has been published for CVE-2026-4109 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-2026-4109 being exploited?
There is no known exploitation of CVE-2026-4109 in the wild and no public exploit code.
Sources
Also known as GHSA-mh3g-vpxv-m2cr.