CVE-2026-1655 Missing authorization in EventPrime – Events Calendar, Bookings and Tickets
Authenticated subscribers can modify arbitrary administrator-created events by manipulating the event_id parameter due to missing authorization checks.
- 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-2026-1655?
CVE-2026-1655 is a medium-severity missing authorization vulnerability in metagauss EventPrime – Events Calendar, Bookings and Tickets, published on 18 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The EventPrime plugin for WordPress is vulnerable to unauthorized post modification due to missing authorization checks in all versions up to, and including, 4.2.8.4. This is due to the save_frontend_event_submission function accepting a user-controlled event_id parameter and updating the corresponding event post without enforcing ownership or capability checks. This makes it possible for authenticated (Customer+) attackers to modify posts created by administrators by manipulating the event_id parameter granted they can obtain a valid nonce.
Weakness: CWE-862
Which versions are affected by CVE-2026-1655?
How do I fix CVE-2026-1655?
No fix has been published for CVE-2026-1655 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-2026-1655 being exploited?
There is no known exploitation of CVE-2026-1655 in the wild and no public exploit code.
Sources
Also known as GHSA-jh7f-pj8r-h37c.