WPForms Plugin up to 2.0.2.1 on WordPress key cross site scripting

Summaryinfo

A vulnerability was found in WPForms Plugin up to 2.0.2.1 and classified as problematic. Impacted is an unknown function. Such manipulation of the argument key leads to cross site scripting. This vulnerability is listed as CVE-2026-101921. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in WPForms Plugin up to 2.0.2.1. It has been rated as problematic. Affected by this issue is an unknown code. The manipulation of the argument key 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 WPForms – AI Form Builder for WordPress – Contact Forms, Payment Forms, Survey Form, Quiz & More plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'attacker-chosen key referenced by the smart tag (e.g. "x")' parameter in all versions up to, and including, 2.0.2.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Exploitation requires that a site administrator has previously saved a form whose description embeds a {query_var} Smart Tag inside an iframe srcdoc attribute and has enabled Show Description on a public-facing page.

The advisory is shared for download at wordfence.com. This vulnerability is handled as CVE-2026-101921 since 09/28/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are necessary 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.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Name

• WPForms Plugin

Version

• 2.0.2.0
• 2.0.2.1

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CPE 2.2info

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