CVE-2026-91152 Everest Forms <= 3.6.2 - Reflected Cross-Site Scripting via 'evf_toast_type' Parameter
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-91152?
CVE-2026-91152 is a medium-severity vulnerability in wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI, published on 29 Oct 2026.
Official description
The Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'evf_toast_type' parameter in all versions up to, and including, 3.6.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Exploitation requires the sibling evf_toast parameter to decode successfully via atob(), but this is a trivially attacker-controlled prerequisite.
Weakness: CWE-79
Which versions are affected by CVE-2026-91152?
How do I fix CVE-2026-91152?
No fix has been published for CVE-2026-91152 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-91152 being exploited?
There is no known exploitation of CVE-2026-91152 in the wild and no public exploit code.
Sources
Also known as GHSA-883r-xqxq-wq5r.