CVE-2026-3296 Details.
Everest Forms WordPress Plugin <= 3.4.3 - PHP Object Injection
Atlas does not check this one. Needs an outside server.
To test for this one, the site would have to contact a server outside your network and report back. Atlas does not run checks that need that, so it does not run this one.
About CVE-2026-3296. What It Means.
The Everest Forms plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.4.3 via deserialization of untrusted input from form entry metadata. This is due to the html-admin-page-entries-view.php file calling PHP's native unserialize() on stored entry meta values without passing the allowed_classes parameter. This makes it possible for unauthenticated attackers to inject a serialized PHP object payload through any public Everest Form…
Affected Product. What Is Hit.
- Vendor
- wpeverest
- Product
- Wpeverest Everest Forms
FAQ
Common Questions.
Everest Forms WordPress Plugin <= 3.4.3 - PHP Object Injection. The Everest Forms plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.4.3 via deserialization of untrusted input from form entry metadata. This is due to the html-admin-page-entries-view.php file calling PHP's native unserialize() on stored entry meta values without passing the allowed_classes parameter. This makes it possible for unauthenticated attackers to inject a serialized PHP object payload through any public Everest Form…
No. To test for this one, the site would have to contact a server outside your network and report back. Atlas does not run checks that need that, so it does not run this one. The facts about CVE-2026-3296 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-3296 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Wpeverest Everest Forms to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-3296. Atlas does not run a check for it, so nothing here says whether a particular site is affected.