Vulnerability · Published May 14, 2026 · Assigned by Wordfence
CVE-2026-5396Fluent Forms <= 6.1.21 - Authenticated (Subscriber+) Authorization Bypass via 'form_id' Parameter
High 8.2
In plain English
A high-severity authorization bypass via user-controlled key in Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder from techjewel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).
Official description
The Fluent Forms plugin for WordPress is vulnerable to Authorization Bypass Through User-Controlled Key in all versions up to, and including, 6.1.21. This is due to the SubmissionPolicy class authorizing submission-level actions (read, modify, delete, add notes) based on a user-supplied `form_id` query parameter. This makes it possible for authenticated attackers, with Fluent Forms Manager access restricted to specific forms, to read, modify status, add notes to, and permanently delete form submissions belonging to any other form by spoofing the form_id parameter to a form they are authorized for.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| techjewel | Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder | 0 – through 6.1.21 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N