CVE-2026-4987

The SureForms – Contact Form, Payment Form & Other Custom Form Builder plugin for WordPress is vulnerable to Payment Amount Bypass in all versions up to, and including, 2.5.2. This is due to the create_payment_intent() function performing a payment validation solely based on the value of a user-controlled parameter. This makes it possible for unauthenticated attackers to bypass configured form payment-amount validation and create underpriced payment/subscription intents by setting form_id to 0.

Score

CVSS 3.1 7.5 High

Status

Deferred - security@wordfence.com

Published

2026-03-28

Last modified

2026-04-08

Weaknesses

CWE-20

Affected products

• Payment Form Other Custom Form Builder (Brainstormforce)
• Sureforms Contact Form (Brainstormforce)

References

• https://plugins.trac.wordpress.org/changeset/3488858/sureforms
• https://www.wordfence.com/threat-intel/vulnerabilities/id/c4772b32-a730-44f2-b43c-f9bd5abb6541?source=cve