CVE-2026-12270 Everest Forms < 3.5.0 - Unauthenticated Missing Authorization via Site Assistant REST Endpoints
Unauthenticated attackers can bypass authorization checks on REST endpoints to read onboarding status, modify plugin options, and trigger emails.
- 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-2026-12270?
CVE-2026-12270 is a medium-severity missing authorization vulnerability in Unknown Everest Forms, published on 9 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Everest Forms WordPress plugin before 3.5.0 does not correctly restrict access to several REST API endpoints belonging to its onboarding assistant: the capability check is only applied when an attacker-controllable request header holds a specific value, so it can be bypassed by omitting or changing that header. This makes it possible for unauthenticated attackers to read onboarding status information, modify the related Everest Forms WordPress plugin before 3.5.0 options, and trigger an email from the site to an arbitrary address.
Which versions are affected by CVE-2026-12270?
How do I fix CVE-2026-12270?
No fix has been published for CVE-2026-12270 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-2026-12270 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-12270 exists.
Sources
Also known as GHSA-v4gv-5wcc-cjvx.