CVE-2026-18366 Events Manager < 7.4.1 - Unauthenticated Privilege Escalation to Administrator
Unauthenticated attackers can escalate privileges to Administrator or delete accounts by exploiting flawed capability mapping in the Events Manager plugin.
- 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-2026-18366?
CVE-2026-18366 is a critical vulnerability in Unknown Events Manager, published on 12 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Events Manager WordPress plugin before 7.4.1 does not properly scope its capability mapping, discarding the access control decisions WordPress already made for unrelated privileged actions, which allows unauthenticated users to change the password of, escalate to Administrator, or delete any account whose user ID happens to match the ID of one of the Events Manager WordPress plugin before 7.4.1's own posts.
Weakness: CWE-269
Which versions are affected by CVE-2026-18366?
How do I fix CVE-2026-18366?
No fix has been published for CVE-2026-18366 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-18366 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18366 exists.
Public exploit code: 3 proofs of concept on GitHub.
Sources
Also known as GHSA-gpp5-qcrv-vm9j.