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CVE-2026-4160

MEDIUM 5.3 CVSS 3.1
Published
April 16, 2026
Last modified
June 17, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-639
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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").

Affected WordPress components

  • Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder Plugin · fluentform
    Confirmed match Active
    Version 6.1.21
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • techjewel Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder — Version 6.1.21

References