CVE-2026-3328

Description

The Frontend Admin by DynamiApps plugin for WordPress is vulnerable to PHP Object Injection via deserialization of the 'post_content' of admin_form posts in all versions up to, and including, 3.28.31. This is due to the use of WordPress's `maybe_unserialize()` function without class restrictions on user-controllable content stored in admin_form post content. This makes it possible for authenticated attackers, with Editor-level access and above, to inject a PHP Object. The additional presence of a POP chain allows attackers to achieve remote code execution.

References

• https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.28.27/main/admin/admin-pages/forms/settings.php#L419
• https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/trunk/main/admin/admin-pages/forms/settings.php#L419
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3486785%40acf-frontend-form-element&new=3486785%40acf-frontend-form-element&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/0faa8f07-88c1-4638-9de5-e202807866e1?source=cve