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CVE-2026-13167— Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI <= 3.5.2 - Missing Authorization to Authenticated (Delegated+) Arbitrary Plugin Activation via REST API and AJAX Endpoints

Quick assessment

Affected
wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress TrueBooker是WordPress基金会开源的一款内容管理系统的功能组件。 WordPress TrueBooker 3.5.2及之前版本存在授权问题漏洞，该漏洞源于插件未正确验证用户是否有权执行操作，可能导致经过身份验证的攻击者利用委派的表单管理权限激活任意已安装的WordPress插件。

CVSS 4.3 · Medium EPSS 0.47% · P39

Affected Version Matrix 1

VendorProduct Version RangeStatus
wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI ≤ 3.5.2 affected
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I. Basic Information for CVE-2026-13167

Vulnerability Information
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Vulnerability Title
Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI <= 3.5.2 - Missing Authorization to Authenticated (Delegated+) Arbitrary Plugin Activation via REST API and AJAX Endpoints
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress TrueBooker 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress TrueBooker是WordPress基金会开源的一款内容管理系统的功能组件。 WordPress TrueBooker 3.5.2及之前版本存在授权问题漏洞，该漏洞源于插件未正确验证用户是否有权执行操作，可能导致经过身份验证的攻击者利用委派的表单管理权限激活任意已安装的WordPress插件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI 0 ~ 3.5.2 -

II. Public POCs for CVE-2026-13167

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III. Intelligence Information for CVE-2026-13167

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Vendor Advisories for CVE-2026-13167 (1)

IV. Related Vulnerabilities

Same product: Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI
Same vendor: wpeverest
Same weakness: CWE-862

V. Comments for CVE-2026-13167

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