CVE-2026-13169 Eventin < 4.1.21 - Contributor+ Arbitrary Event Modification, Deletion and Ownership Takeover via IDOR
Contributors can modify, delete, or take ownership of events created by other users, including administrators, due to missing ownership 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-2026-13169?
CVE-2026-13169 is a high-severity missing authorization vulnerability in Unknown Eventin, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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, allowing users with contributor-level access and above to alter, delete, or take over events created by other users including administrators.
Weakness: CWE-639
Which versions are affected by CVE-2026-13169?
How do I fix CVE-2026-13169?
No fix has been published for CVE-2026-13169 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-2026-13169 being exploited?
There is no known exploitation of CVE-2026-13169 in the wild and no public exploit code.
Sources
Also known as GHSA-f556-jv65-29j9.