Description

The Fluent Forms Pro Add On Pack plugin for WordPress is vulnerable to Insufficient Verification of Data Authenticity in all versions up to, and including, 6.1.17. This is due to the PayPal IPN (Instant Payment Notification) verification being disabled by default (`disable_ipn_verification` defaults to `'yes'` in `PayPalSettings.php`). This makes it possible for unauthenticated attackers to send forged PayPal IPN notifications to the publicly accessible IPN endpoint, marking unpaid form submissions as "paid" and triggering post-payment automation (emails, access grants, digital product delivery).

INFO

Published Date :

2026-02-27T03:23:19.329Z

Last Modified :

2026-04-08T17:29:56.825Z

Source :

Wordfence
AFFECTED PRODUCTS

The following products are affected by CVE-2026-2428 vulnerability.

Vendors Products
Techjewel
  • Fluent Forms Pro Add On Pack
Wordpress
  • Wordpress
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-2428.

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact