CVE-2026-12142 NEX-Forms <= 9.2.2 - Unauthenticated Stored Cross-Site Scripting via '_name[]' Array Parameter
Unauthenticated attackers can inject arbitrary scripts via the '_name[]' parameter, leading to code execution or account takeover when users view the page.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-12142?
CVE-2026-12142 is a high-severity cross-site scripting vulnerability in webaways NEX-Forms – Ultimate Forms Plugin for WordPress, published on 1 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-12142?
How do I fix CVE-2026-12142?
No fix has been published for CVE-2026-12142 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-12142 being exploited?
There is no known exploitation of CVE-2026-12142 in the wild and no public exploit code.
Sources
Also known as GHSA-j235-ccfg-wwpf.