CVE-2026-13167
Vulnérabilité moyenne dans Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI (wpeverest)
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.
Gravité et risque d'exploitation
CVE-2026-13167 obtient un score CVSS de 4.3/10, soit une gravité moyenne. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.47 %, ce qui la place devant 39.5 % des CVE référencées.
Que faire ?
- Vérifiez si Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI (versions 0, <=3.5.2) est présent sur votre parc.
- Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
- À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
- Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.
Références
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6d1ba996-e26c-45cc-ab95-338663f481d9?source=cve
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.5.1/includes/RestApi/controllers/version1/class-evf-modules.php#L730
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.5.1/includes/RestApi/controllers/version1/class-evf-modules.php#L315
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.5.1/includes/class-evf-ajax.php#L709
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.5.1/includes/class-evf-ajax.php#L1408
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.5.1/includes/class-evf-ajax.php#L121
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.4.5/includes/RestApi/controllers/version1/class-evf-modules.php#L730
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.4.5/includes/RestApi/controllers/version1/class-evf-modules.php#L315
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.4.5/includes/class-evf-ajax.php#L709
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.4.5/includes/class-evf-ajax.php#L1408
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.4.5/includes/class-evf-ajax.php#L121
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3634069%40everest-forms&new=3634069%40everest-forms
