Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder: A security weakness
Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder is affected by a security weakness. The vulnerable path is reachable without authentication. The resulting impact depends on how the affected component exposes the vulnerable operation.
- Component
- Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder
- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Dec 06, 2025
This CVE was published Dec 06, 2025 and is one of 5 known issues for this plugin.
Update, patch or deactivate.
Update Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical 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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N