Forminator – Contact Form, Payment Form & Custom Form Builder <= 1.52.0 - Missing Authorization to Unauthenticated Stripe PaymentIntent Reuse / Underpayment Bypass via 'paymentid' Parameter
| CVE | CVE-2026-2729 |
|---|---|
| CVSS | 5.3 (Medium) |
| Publicly Published | May 4, 2026 |
| Last Updated | May 5, 2026 |
| Researcher |
Kittipat Jitphonchana
|
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.
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Vulnerability Details for Forminator Forms – Contact Form, Payment Form & Custom Form Builder
| Software Type | Plugin |
|---|---|
| Software Slug | forminator (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 1.52.1, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Forminator Forms – Contact Form, Payment Form & Custom Form Builder
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