What the vulnerability does
01Description
The Avada | Website Builder For WordPress & eCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's fusion_button shortcode in all versions up to, and including, 3.11.9 due to insufficient input sanitization and output escaping on user supplied attributes. 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. NOTE: This vulnerability was partially fixed in 3.11.9. Additional hardening for alternate attack vectors was added to version 3.11.10.
Explanation of Vulnerability in Simple Terms
02Summary
Avada (Fusion) Builder versions up to 3.11.9 contain a cross-site scripting (XSS) vulnerability that allows authenticated users with low privileges to inject malicious scripts. The vulnerability has a changed scope, meaning the impact extends beyond the vulnerable component itself. Site administrators should update to a version newer than 3.11.9 to remediate this issue.
What an attacker can do
03Attacker Capabilities
Inject and execute malicious JavaScript in the site, affecting other users and potentially stealing data or session tokens.
Potential impact on your site
04Site Impact
Authenticated users with low privileges can inject scripts that compromise other users' sessions or data; scope is changed, so impact extends beyond the builder component.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege authenticated account (e.g., contributor or subscriber role) on the site.
Key dates
06Disclosure timeline
September 13, 2024
CVE published
April 8, 2026
Record updated
