CVE-2026-101921
Received Received - Intake

Reflected Cross-Site Scripting in WPForms AI Form Builder for WordPress

Publication date: 2026-10-10

Last updated on: 2026-10-10

Assigner: Wordfence

Description
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.

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Meta Information

Published
2026-10-10
Last Modified
2026-10-10
Generated
2026-10-10
AI Q&A
2026-10-10
EPSS Evaluated
N/A
NVD
CVE-2026-101921
EUVD
EUVD-2026-96278

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
smub WPForms – AI Form Builder for WordPress – Contact Forms, Payment Forms, Survey Form, Quiz & More 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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.

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Executive Summary

This vulnerability is a Reflected Cross-Site Scripting (XSS) issue in the WPForms plugin for WordPress. It allows unauthenticated attackers to inject malicious scripts into web pages by exploiting insufficient input sanitization and output escaping in the 'attacker-chosen key referenced by the smart tag' parameter. The attack requires a site administrator to have saved a form with a {query_var} Smart Tag inside an iframe srcdoc attribute and enabled Show Description on a public page.

Detection Guidance

This vulnerability involves reflected Cross-Site Scripting in the WPForms plugin. Detection requires checking if the plugin is installed and verifying its version. Inspect WordPress sites for the plugin and confirm if the version is up to 2.0.2.1 or lower. No direct commands are provided for detection in the given context.

Impact Analysis

If exploited, this vulnerability could allow attackers to execute arbitrary web scripts in a victim's browser when they click a malicious link. This could lead to theft of session cookies, account takeover, or redirection to phishing sites. Users of vulnerable WordPress sites running the affected WPForms plugin versions up to 2.0.2.1 are at risk.

Compliance Impact

This vulnerability could lead to unauthorized access to user data, which may violate GDPR's data protection requirements or HIPAA's safeguards for protected health information. Organizations using the affected plugin may face compliance violations if user data is compromised due to this XSS flaw.

Mitigation Strategies

Immediately update the WPForms plugin to the latest version beyond 2.0.2.1. If updating is not possible, consider disabling the plugin temporarily until an update is applied. Review forms for any embedded {query_var} Smart Tags in iframes or public-facing pages.

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