CVE-2026-13040

NEX-Forms <= 9.2.2 - Unauthenticated Stored Cross-Site Scripting via 'real_val__' Parameter

Published Jul 3, 2026 CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
Link Providers
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/includes/classes/class.functions.php#L2461 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L2660 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L467 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L4870 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L4896 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L5323 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/includes/classes/class.functions.php#L2461 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L2660 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L467 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L4870 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L4896 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L5323 cve-icon cve-icon
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= cve-icon cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/49dc267a-48cf-487f-bedc-fd892666e9a0?source=cve cve-icon cve-icon
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title NEX-Forms <= 9.2.2 - Unauthenticated Stored Cross-Site Scripting via 'real_val__' Parameter
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
Jul 7, 2026, 5:01 PM
Reserved
Jun 23, 2026, 5:17 PM
Status
Deferred
Published
Jul 3, 2026, 6:16 AM
Modified
Jul 7, 2026, 6:16 PM