CVE-2026-4987 Details.
SureForms <= 2.5.2 - Unauthenticated Payment Amount Validation Bypass via form_id
Atlas does not check this one. Needs requests that change data.
To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check.
About CVE-2026-4987. What It Means.
The SureForms plugin for WordPress is vulnerable to payment amount validation bypass in versions up to, and including, 2.5.2. The create_payment_intent AJAX handler checks `if ($form_id > 0 && !empty($block_id))` before calling validate_payment_amount(). By sending form_id=0 (the default intval of a missing/zero value), an unauthenticated attacker completely skips the server-side amount validation and can create Stripe payment intents with arbitrary amounts, bypassing config…
Affected Product. What Is Hit.
- Vendor
- brainstormforce
- Product
- Brainstormforce SureForms
FAQ
Common Questions.
SureForms <= 2.5.2 - Unauthenticated Payment Amount Validation Bypass via form_id. The SureForms plugin for WordPress is vulnerable to payment amount validation bypass in versions up to, and including, 2.5.2. The create_payment_intent AJAX handler checks `if ($form_id > 0 && !empty($block_id))` before calling validate_payment_amount(). By sending form_id=0 (the default intval of a missing/zero value), an unauthenticated attacker completely skips the server-side amount validation and can create Stripe payment intents with arbitrary amounts, bypassing config…
No. To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check. The facts about CVE-2026-4987 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-4987 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Brainstormforce SureForms to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-4987. Atlas does not run a check for it, so nothing here says whether a particular site is affected.