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.
Published: 2026-07-03
Score: 7.2 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The NEX‑Forms plugin for WordPress contains an insufficient input validation flaw for the ‘real_val__’ parameter. Because the plugin stores the submitted value without sanitizing or escaping it, an attacker can submit arbitrary JavaScript that is then rendered to any user who views the affected form page. The vulnerability is a stored cross‑site scripting (XSS) flaw that allows unauthenticated attackers to inject web scripts that execute whenever a accesses the compromised page.

Affected Systems

The flaw is present in all releases of the webaways NEX‑Forms – Ultimate Forms Plugin for WordPress up to and including version 9.2.2. Any WordPress site that has one of these versions installed and the plugin enabled is vulnerable.

Risk and Exploitability

The CVSS score of 7.2 indicates a moderate‑to‑high severity. The EPSS score of < 1 % points to The vulnerability can be triggered remotely because the plugin registers the wp_ajax_nopriv_submit_nex_form action without nonce verification, giving unauthenticated users direct access. The flaw is not currently listed in the CISA KEV catalog.

Generated by OpenCVE AI on July 24, 2026 at 11:04 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the NEX‑Forms plugin to the latest version released by webaways; the vendor’s newer releases contain a fix for this flaw.
  • Block or restrict unauthenticated requests to the wp_ajax_nopriv_submit_nex_form AJAX endpoint, for example by using a security‑plugin or a custom code snippet to reject such calls until the plugin is updated.
  • If an immediate update is not possible, apply server‑side sanitization or escaping (e.g., esc_html() or wp_kses()) to the ‘real_val__’ parameter before storing or rendering it to mitigate the stored XSS risk.

Generated by OpenCVE AI on July 24, 2026 at 11:04 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

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
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L2660 cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L467 cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L4870 cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L4896 cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L5323 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
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L2660 cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L467 cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L4870 cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L4896 cve-icon
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L5323 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
https://www.wordfence.com/threat-intel/vulnerabilities/id/49dc267a-48cf-487f-bedc-fd892666e9a0?source=cve cve-icon
History

Tue, 07 Jul 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Fri, 03 Jul 2026 05:30:00 +0000

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.

cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-07-07T17:01:29.467Z

Reserved: 2026-06-23T17:17:56.022Z

Link: CVE-2026-13040

cve-icon Vulnrichment

Updated: 2026-07-06T18:12:16.206Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-24T11:15:03Z

Weaknesses
  • CWE-79

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