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CVE-2026-2729— Forminator – Contact Form, Payment Form & Custom Form Builder <= 1.52.0 - Missing Authorization to Unauthenticated Stripe PaymentIntent Reuse / Underpayment Bypass via 'paymentid' Parameter

Quick assessment

Affected
wpmudev Forminator Forms – Contact Form, Payment Form & 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 Forminator 1.52.0及之前版本存在安全漏洞，该漏洞源于在处理攻击者提供的Stripe PaymentIntent标识符时未正确验证用户授权，可能导致未经身份验证的攻击者通过重用先前成功的小额Stripe

CVSS 5.3 · Medium EPSS 0.37% · P30

Affected Version Matrix 1

VendorProduct Version RangeStatus
wpmudev Forminator Forms – Contact Form, Payment Form & Custom Form Builder ≤ 1.52.0 affected
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I. Basic Information for CVE-2026-2729

Vulnerability Information
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Vulnerability Title
Forminator – Contact Form, Payment Form & Custom Form Builder <= 1.52.0 - Missing Authorization to Unauthenticated Stripe PaymentIntent Reuse / Underpayment Bypass via 'paymentid' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Forminator plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.52.0. This is due to the plugin not properly verifying that a user is authorized to perform an action when processing attacker-supplied Stripe PaymentIntent identifiers in the public payment flow. This makes it possible for unauthenticated attackers to submit high-value paid forms as completed by reusing a previously succeeded low-value Stripe PaymentIntent, resulting in underpayment/payment bypass conditions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Forminator 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 Forminator 1.52.0及之前版本存在安全漏洞，该漏洞源于在处理攻击者提供的Stripe PaymentIntent标识符时未正确验证用户授权，可能导致未经身份验证的攻击者通过重用先前成功的小额Stripe
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
wpmudev Forminator Forms – Contact Form, Payment Form & Custom Form Builder 0 ~ 1.52.0 -

II. Public POCs for CVE-2026-2729

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III. Intelligence Information for CVE-2026-2729

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Vendor Advisories for CVE-2026-2729 (1)

IV. Related Vulnerabilities

Same product: Forminator Forms – Contact Form, Payment Form & Custom Form Builder
Same vendor: wpmudev
Same weakness: CWE-639

V. Comments for CVE-2026-2729

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