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CVE-2026-91153— Everest Forms <= 3.6.2 - Unauthenticated Sensitive Information Exposure via Smart-Tag Injection in Smart-Tag Injection in Form Field Values ({post_meta key=...})

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 插件 Everest Forms（提供联系表单、支付表单、测验、调查及自定义表单构建器，并集成 AI 功能）在 3.6.2 及以下所有版本中，存在敏感信息泄露漏洞。该漏洞允许未认证的攻击者通过表单提交通知邮件或已存储的提交记录，提取任意 WordPress 文章自定义字段（post meta）的值，其中包括许可证密钥、API 令牌、SMTP 凭据，以及存储在任何文章类型中的 Stripe 或 AWS 密钥等敏感信息。由于每个嵌入表单中都会公开渲染提交 nonce（一次性令牌），且该 nonce

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-91153

Vulnerability Information
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Vulnerability Title
Everest Forms <= 3.6.2 - Unauthenticated Sensitive Information Exposure via Smart-Tag Injection in Smart-Tag Injection in Form Field Values ({post_meta key=...})
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 Sensitive Information Exposure in all versions up to, and including, 3.6.2 via the process. This makes it possible for unauthenticated attackers to extract arbitrary WordPress post meta values — including license keys, API tokens, SMTP credentials, and Stripe or AWS secrets stored on any post type — via form submission notification emails or stored entries. The submission nonce is publicly rendered in every embedded form and can additionally be minted anonymously via the nopriv everest_forms_get_form_update_nonce action, meaning no account or prior authentication of any kind is required to complete the exploit.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI 0 ~ 3.6.2 -

II. Public POCs for CVE-2026-91153

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III. Intelligence Information for CVE-2026-91153

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Other References for CVE-2026-91153 (9)

IV. Related Vulnerabilities

Same product: Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI
Same vendor: wpeverest
Same weakness: CWE-200