CVE-2026-13167 Missing authorization in Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI
Authenticated users with delegated form access can activate arbitrary plugins without proper authorization, potentially leading to privilege escalation or code execution.
- 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-2026-13167?
CVE-2026-13167 is a medium-severity missing authorization vulnerability in wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI, published on 16 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.5.2. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with delegated form management access and above, to activate arbitrary already-installed WordPress plugins — including previously deactivated or vulnerable plugins — without holding the core activate_plugins capability. Exploitation requires the target user to hold a delegated Everest Forms capability (manage_everest_forms, everest_forms_create_forms, or everest_forms_view_forms), which the plugin's own roles and permissions tool allows administrators to assign to non-administrator roles such as Author; the nonces required to exploit the AJAX handlers are emitted on EVF admin pages accessible to any such delegated user.
Weakness: CWE-862
Which versions are affected by CVE-2026-13167?
How do I fix CVE-2026-13167?
No fix has been published for CVE-2026-13167 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-2026-13167 being exploited?
There is no known exploitation of CVE-2026-13167 in the wild and no public exploit code.
Sources
Also known as GHSA-g2qc-vm5h-cg28.