Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder <= 6.1.21 - Insecure Direct Object Reference in Stripe SCA Confirmation to Unauthenticated Payment Status Modification
| CVE | CVE-2026-4160 |
|---|---|
| CVSS | 5.3 (Medium) |
| Publicly Published | April 16, 2026 |
| Last Updated | April 16, 2026 |
| Researcher |
Prickly Cactus
|
Description
The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to Insecure Direct Object Reference via the 'submission_id' parameter in versions up to, and including, 6.1.21. This is due to missing authorization and ownership validation on a user controlled key in the Stripe SCA confirmation AJAX endpoint. This makes it possible for unauthenticated attackers to modify payment status of targeted pending submissions (for example, setting the status to "failed").
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Vulnerability Details for Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder
| Software Type | Plugin |
|---|---|
| Software Slug | fluentform (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 6.2.0, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder
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