What the vulnerability does
01Description
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.
Explanation of Vulnerability in Simple Terms
02Summary
Ultra Addons for Contact Form 7 versions up to 3.5.43 contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other site visitors, including administrators. The vulnerability affects the plugin's form handling and persists across page loads, potentially compromising site security and user data.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers when they view affected pages or forms.
Potential impact on your site
04Site Impact
Attackers with basic user accounts can steal admin credentials, deface content, or redirect visitors to malicious sites.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account on the site (e.g., subscriber or contributor role).
Key dates
06Disclosure timeline
August 7, 2026
CVE published
August 7, 2026
Record updated
