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Vulnerabilities and Security Researches

Contact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder, CVE-2025-13748

CVE, Research URL

CVE-2025-13748

Published on
Dec 06, 2025
Research Description
The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 6.1.7 via the 'submission_id' parameter due to missing validation on a user controlled key within the confirmScaPayment() function. This makes it possible for unauthenticated attackers to mark arbitrary submissions as failed via crafted requests to the endpoint granted they can guess or enumerate a valid submission identifier.
Affected versions
max 6.1.8.
Status
vulnerable