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CVE-2026-101921

MEDIUM 4.7 CVSS 3.1
Published
October 10, 2026
Last modified
October 13, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

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.

Affected WordPress components

  • WPForms – AI Form Builder for WordPress – Contact Forms, Payment Forms, Survey Form, Quiz & More Plugin · wpforms-lite
    Confirmed match Active
    Up to and including 2.0.2.1
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • smub WPForms – AI Form Builder for WordPress – Contact Forms, Payment Forms, Survey Form, Quiz & More — Up to and including 2.0.2.1

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wpforms-lite/tags/2.0.2.1/src/Frontend/Classic.php#L323
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wpforms-lite/tags/2.0.2.1/src/SmartTags/SmartTag/QueryVar.php#L34
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wpforms-lite/tags/2.0.2.1/src/SmartTags/SmartTags.php#L673
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3730630/wpforms-lite/trunk/src/SmartTags/SmartTags.php
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?reponame=&new=3730630%40wpforms-lite&old=3709178%40wpforms-lite
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/39e1abcf-c3b6-4c53-a3dc-8a5741f24cca?source=cve
  • nvd.nist.gov Official NVD record