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CVE-2026-4888— Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder <= 3.4.7 - Missing Authorization to Authenticated (Subscriber+) Email Sending

Quick assessment

Affected
wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder
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和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Everest Forms 3.4.7及之前版本存在安全漏洞，该漏洞源于send_test_email函数缺少权限检查，可能导致经过身份验证的攻击者向任意地址发送测试邮件。

CVSS 4.3 · Medium EPSS 0.26% · P17

Possible ATT&CK Techniques 1 AI

T1534 · Internal Spearphishing

Affected Version Matrix 1

VendorProduct Version RangeStatus
wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder ≤ 3.4.7 affected
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I. Basic Information for CVE-2026-4888

Vulnerability Information
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Vulnerability Title
Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder <= 3.4.7 - Missing Authorization to Authenticated (Subscriber+) Email Sending
Source: CVE Program / CVE List V5
Vulnerability Description
The Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder plugin for WordPress is vulnerable to unauthorized email sending due to a missing capability check on the send_test_email() function in all versions up to, and including, 3.4.7. This makes it possible for authenticated attackers, with Subscriber-level access and above, to send test emails to arbitrary addresses from the server.
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 plugin Everest Forms 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Everest Forms 3.4.7及之前版本存在安全漏洞，该漏洞源于send_test_email函数缺少权限检查，可能导致经过身份验证的攻击者向任意地址发送测试邮件。
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 0 ~ 3.4.7 -

II. Public POCs for CVE-2026-4888

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III. Intelligence Information for CVE-2026-4888

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News Coverage for CVE-2026-4888 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-4888

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