CVE-2026-11567: Unknown Sureforms

Medium severity, CVSS 5.9. EPSS: 0.3% chance of exploitation in the next 30 days.

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

• Unknown Sureforms: before 2.11.1 (fixed in 2.11.1)

Published 2026-07-14. Last modified 2026-07-14.