CVE-2026-4987: SureForms <= 2.5.2 - Unauthenticated Payment Amount Validation Bypass via 'form_id'
brainstormforce · SureForms – Contact Form, Payment Form & Other Custom Form Builder
Affected: brainstormforce SureForms – Contact Form, Payment Form & Other Custom Form Builder · Exploitation: check available, not yet exploited
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 61% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- brainstormforce · SureForms – Contact Form, Payment Form & Other Custom Form Builderup to and including 2.5.2
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Check available, not yet exploited. A public nuclei template can confirm it on a system you are authorised to test.
- CISA KEV
- Not listed
- Public check
- SureForms <= 2.5.2 - Unauthenticated Payment Amount Validation Bypass via form_id · nuclei template in projectdiscovery/nuclei-templates
- Vendor
- brainstormforce
- Published
- March 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-4987 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.