CVE-2026-12142

The NEX-Forms – Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via '_name[]' Array 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 wp_kses() output filtering pass provides no mitigation because NEXForms_allowed_tags() explicitly permits <script>, <iframe src/srcdoc>, and JS event handlers such as onClick, onBlur, and onChange in its allow-list.

• CWE-79

• https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.10/includes/classes/class.db.php#L2660
• https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.10/includes/classes/class.db.php#L2809
• https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.10/includes/classes/class.functions.php#L2343
• https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.10/main.php#L2660
• https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.10/main.php#L2720
• https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.10/main.php#L2903
• https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/includes/classes/class.db.php#L2660
• https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/includes/classes/class.db.php#L2809
• https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/includes/classes/class.functions.php#L2343
• 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#L2720
• https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L2903
• https://plugins.trac.wordpress.org/changeset?old_path=%2Fnex-forms-express-wp-form-builder/tags/9.2.2&new_path=%2Fnex-forms-express-wp-form-builder/tags/9.2.3
• https://www.wordfence.com/threat-intel/vulnerabilities/id/da235dea-4884-4e6a-a8b8-65d34f050684?source=cve

Published

Jul 1, 2026

Last Modified

Jul 1, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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