CVE-2026-11567
MediumCVSS 5.9Exploitation Probability (EPSS)
Low risk3th percentile - higher than 3% of all known CVEs
Summary
The SureForms WordPress plugin before version 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.
Risk Assessment
The organization may suffer financial losses as attackers can intentionally underpay for products or subscriptions by exploiting the lack of validation of dynamic payment amounts in forms.
Recommendation
Immediately update the SureForms plugin to version 2.11.1 or later, which includes a fix for payment amount validation.
Other vulnerabilities in SureForms
See all- CVE-2026-19500High
The Entries component in Brainstorm Force SureForms versions less than 2.12.3 does not enforce adequate limits on user-controlled form fields or submitted content during processing and rendering, allowing a remote attacker to exhaust server resources, prevent administrators from accessing the Entries interface, and trigger HTTP 500 errors via crafted form submissions.
- CVE-2026-7623Medium
The SureForms plugin for WordPress up to version 2.8.1 has a Stored Cross-Site Scripting vulnerability via the 'headingWrapper' parameter due to insufficient input sanitization and output escaping. This allows authenticated attackers with Contributor-level access and above to inject arbitrary scripts.
- CVE-2026-15288High
The SureForms plugin for WordPress up to version 2.2.1 has an improper input validation vulnerability. The 'create_payment_intent' and 'create_subscription_intent' functions accept payment amounts directly from POST data without validating against the form's configured price, allowing unauthenticated attackers to modify the payment amount.
Original NVD description (English source)
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.