What’s Vulnerable › Vulnerabilities
CVE-2026-11567: SureForms < 2.11.1 - Unauthenticated Payment Amount Bypass
- Severity: medium (CVSS 5.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-14 · updated 2026-07-14
Description
The SureForms WordPress plugin before 2.11.1 does not properly validate the payment amount on forms that use a dynamically-sourced (variable/hidden) payment amount, allowing unauthenticated users to underpay for the configured product or subscription. Forms using a fixed configured price are not affected.
Affected products
- brainstormforce SureForms – Contact Form, Payment Form & Other Custom Form Builder: before 2.11.1 — fixed in 2.11.1
How to fix
Upgrade to a fixed version: brainstormforce SureForms – Contact Form, Payment Form & Other Custom Form Builder 2.11.1. Check the vendor advisory for mitigations.
References
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