CVE-2026-4987
SureForms <= 2.5.2 - Unauthenticated Payment Amount Validation Bypass via 'form_id'
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-20 |
| Vendor | brainstormforce |
| Product | sureforms – contact form, payment form & other custom form builder |
| Published | Mar 28, 2026 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
brainstormforce / SureForms – Contact Form, Payment Form & Other Custom Form Builder
0 ≤ 2.5.2
References
Credits
Jack Pas