CVE-2026-4394 Gravity Forms CVE debrief

Who should care

Administrators and users of WordPress sites utilizing the Gravity Forms plugin should assess and potentially update to a patched version to mitigate this vulnerability. This vulnerability has a CVSS score of 6.1, indicating a Medium severity level. Therefore, it is essential for operators of WordPress platforms and security teams to review and address this vulnerability promptly.

Technical summary

The Gravity Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Credit Card field's 'Card Type' sub-field (`input_<id>.4`) in all versions up to, and including, 2.9.30. This is due to the `get_value_entry_detail()` method in the `GF_Field_CreditCard` class outputting the card type value without escaping, combined with `get_value_save_entry()` accepting and storing unsanitized user input for the `input_<id>.4` parameter. The vulnerability allows unauthenticated attackers to inject arbitrary web scripts that execute when an administrator views the form entry in the WordPress dashboard.

Defensive priority

Medium priority given the CVSS score of 6.1 and the potential for unauthenticated attackers to inject arbitrary web scripts.

Recommended defensive actions

• Update Gravity Forms plugin to a version beyond 2.9.30 if available
• Review and monitor form entries for suspicious activity
• Implement additional security measures such as Content Security Policy (CSP) to mitigate XSS attacks
• Limit access to the WordPress dashboard to trusted administrators
• Regularly update and patch WordPress and its plugins
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record was published on 2026-04-08T00:16:05.147Z and was last modified on 2026-07-24T23:10:00.563Z. The NVD entry is currently Deferred. There is limited information available about the specific details of this vulnerability, and defenders should verify the affected scope and severity with the vendor. The Gravity Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Credit Card field's 'Card Type' sub-field in all versions up to, and including, 2.9.30. This vulnerability is due to the `get_value_entry_detail()` method in the `GF_Field_CreditCard` class outputting the card type value without escaping, combined with `get_value_save_entry()` accepting and storing unsanitized user input for the `input_<id>.4` parameter.

Official resources