---
id: CVE-2026-13167
title: >-
  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
summary: >-
  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 ver…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-862
published: '2026-08-16'
updated: '2026-08-16'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-13167'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.4.5/includes/RestApi/controllers/version1/class-evf-modules.php#L315
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.4.5/includes/RestApi/controllers/version1/class-evf-modules.php#L730
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.4.5/includes/class-evf-ajax.php#L121
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.4.5/includes/class-evf-ajax.php#L1408
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.4.5/includes/class-evf-ajax.php#L709
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.5.1/includes/RestApi/controllers/version1/class-evf-modules.php#L315
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.5.1/includes/RestApi/controllers/version1/class-evf-modules.php#L730
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.5.1/includes/class-evf-ajax.php#L121
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.5.1/includes/class-evf-ajax.php#L1408
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.5.1/includes/class-evf-ajax.php#L709
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3634069%40everest-forms&new=3634069%40everest-forms
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/6d1ba996-e26c-45cc-ab95-338663f481d9?source=cve
    label: security@wordfence.com
tags:
  - nvd
ingestedAt: '2026-08-16T13:39:06.210Z'
epss: 0.00346
epssPercentile: 0.28281
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.