CVE-2026-13390 The Events Calendar < 6.16.5.1 - Unauthenticated Event Aggregator Import Status Manipulation
Unauthenticated attackers can manipulate Event Aggregator import statuses and store arbitrary content due to missing authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-13390?
CVE-2026-13390 is a medium-severity missing authorization vulnerability in Unknown The Events Calendar, published on 27 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Events Calendar WordPress plugin before 6.16.5.1 does not perform an authorization check on one of its Event Aggregator import REST API routes and skips an integrity check for a particular status value, allowing unauthenticated attackers to mark existing import records as failed and to store arbitrary content in a hidden comment record.
Weakness: CWE-862
Which versions are affected by CVE-2026-13390?
How do I fix CVE-2026-13390?
No fix has been published for CVE-2026-13390 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-2026-13390 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13390 exists.
Sources
Also known as GHSA-h677-jwp7-x89g.