webaways NEX-Forms Plugin up to 9.2.2 on WordPress wp_kses _name[] cross site scripting

Summaryinfo

A vulnerability categorized as problematic has been discovered in webaways NEX-Forms Plugin up to 9.2.2 on WordPress. This vulnerability affects the function wp_kses. Such manipulation of the argument _name[] leads to cross site scripting. This vulnerability is listed as CVE-2026-12142. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in webaways NEX-Forms Plugin up to 9.2.2 on WordPress. It has been rated as problematic. Affected by this issue is the function wp_kses. The manipulation of the argument _name[] with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

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.

The weakness was presented by Anthony Cihan. The advisory is shared for download at wordfence.com. This vulnerability is handled as CVE-2026-12142 since 06/12/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 9.1.10 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Vendor

• webaways

Name

• NEX-Forms Plugin

Version

• 9.2.0
• 9.2.1
• 9.2.2

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CPE 2.2info

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