CVE-2026-12142: webaways NEX-Forms Stored XSS via _name[] parameter

CVE-2026-12142 · Severity: high · CVSS 7.2 · Published 2026-07-01

NEX-Forms is a WordPress plugin used to create and manage web forms. A security flaw allows unauthenticated attackers to inject malicious scripts into the website via form parameters. These scripts execute in the browser of any user who visits the affected page, potentially leading to unauthorized actions or data theft.

Technologies: Webaways NEX-Forms – Ultimate Forms Plugin for WordPress. Vendors: Webaways.

Quick answers

Is CVE-2026-12142 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-12142 being exploited in the wild.
How severe is CVE-2026-12142?
High severity, with a CVSS score of 7.2, published 1 July 2026.
Which products and versions are affected?
Webaways NEX-Forms – Ultimate Forms Plugin for WordPress up to, and including, 9.2.2.
Is there a fix for CVE-2026-12142?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-12142 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-12142?
Check whether you run Webaways NEX-Forms – Ultimate Forms Plugin for WordPress at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

NEX-Forms for WordPress (up to version 9.2.2) is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping of the '_name[]' array parameter. The vulnerability is exacerbated because the plugin's custom filtering function, NEXForms_allowed_tags(), explicitly permits dangerous HTML elements and attributes including <script>, <iframe>, and various JavaScript event handlers (onClick, onBlur, onChange). An unauthenticated attacker can exploit this by submitting a crafted request to inject malicious scripts into the database. These scripts are then served to and executed by any user viewing the affected content. The issue was addressed in version 9.2.3.

Affected products

  • webaways NEX-Forms – Ultimate Forms Plugin for WordPress up to, and including, 9.2.2

Timeline

  • 2026-07-01: disclosed
  • 2026-07-01: advisory

References

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