CVE-2026-13040

The NEX-Forms – Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'real_val__' parameter in all versions up to, and including, 9.2.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The submission endpoint is registered via wp_ajax_nopriv_submit_nex_form with no nonce verification, making it fully accessible to unauthenticated attackers without any CSRF token.
References
Link Resource
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/includes/classes/class.functions.php#L2461
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L2660
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L467
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L4870
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L4896
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L5323
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/includes/classes/class.functions.php#L2461
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L2660
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L467
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L4870
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L4896
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L5323
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3584399%40nex-forms-express-wp-form-builder&new=3584399%40nex-forms-express-wp-form-builder&sfp_email=&sfph_mail=
https://www.wordfence.com/threat-intel/vulnerabilities/id/49dc267a-48cf-487f-bedc-fd892666e9a0?source=cve
Configurations

No configuration.

History

03 Jul 2026, 06:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-07-03 06:16

Updated : 2026-07-07 18:16


NVD link : CVE-2026-13040

Mitre link : CVE-2026-13040

CVE.ORG link : CVE-2026-13040


JSON object : View

Products Affected

No product.

CWE
CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')