CVE-2026-4160
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
16/04/2026
Last modified:
22/04/2026
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").
Impact
Base Score 3.x
5.30
Severity 3.x
MEDIUM