CVE-2026-4394Medium· 6.1▾ Sunlit

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

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_deta…

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score34/ 100 · Low

impact 33.6 · likelihood 0.1 · exploitation 0

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Proof of concept

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Published

Apr 8, 2026

Updated

Jul 24, 2026

CVSS

6.1

Vendor

—

Product

—

CWE

CWE-79

Depth score

34 · Low

EPSS

0.29% · p22

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS history

Exploit-prediction probability, daily snapshots since Jul 25.

0.3% → 0.3%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 108 days

Apr 8, 2026Published
Disclosed via NVD
Jul 24, 2026Record revised
Last analysed / modified upstream
Jul 25, 2026EPSS first tracked
0.3%

CWE-79 #nvd

Full technical detail▾

Overview

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 Card Type field is not rendered on the frontend form (it is normally derived from the card number), but the backend submission parser blindly accepts it if included in the POST request. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute when an administrator views the form entry in the WordPress dashboard.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd

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