CVE-2026-11880 Fluent Forms < 6.2.1 - Subscriber+ Subscription Cancellation via IDOR
Authenticated low-privilege users can cancel other users' subscriptions due to missing ownership verification in the Fluent Forms 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-2026-11880?
CVE-2026-11880 is a low-severity missing authorization vulnerability in Unknown Fluent Forms, published on 1 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Fluent Forms WordPress plugin before 6.2.1 does not properly verify ownership before processing a subscription cancellation request, allowing authenticated users with a low-privilege account to cancel subscriptions belonging to other users.
Which versions are affected by CVE-2026-11880?
How do I fix CVE-2026-11880?
No fix has been published for CVE-2026-11880 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-2026-11880 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-11880 exists.
Sources
Also known as GHSA-q7hq-w864-jq32.