CVE-2026-12801

Ultra Addons for Contact Form 7 <= 3.5.43 - Authenticated (Contributor+) Stored Cross-Site Scripting via Slider Attributes

Published 7 Aug 2026 • Updated 7 Aug 2026

Severity: MEDIUM

Description

The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Range Slider 'data-label' and 'data-separator' attributes in all versions up to, and including, 3.5.43 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products (1)

• themefic Ultra Addons for Contact Form 7

Problem types

• CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References (2)

• https://www.wordfence.com/threat-intel/vulnerabilities/id/b111bfd5-3eff-4255-9123-cae38bfb73c3?source=cve
• https://plugins.trac.wordpress.org/changeset/3586004/ultimate-addons-for-contact-form-7/trunk/addons/range-slider/js/range-slider.js