What the vulnerability does
01Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeFusion Fusion Builder fusion-builder allows Reflected XSS.This issue affects Fusion Builder: from n/a through < 3.15.0.
Explanation of Vulnerability in Simple Terms
02Summary
Fusion Builder versions before 3.15.0 contain a cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts into pages. An attacker can craft a malicious link or page that, when visited by a site administrator or user, executes arbitrary JavaScript in their browser. This can lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim.
What an attacker can do
03Attacker Capabilities
Inject and execute malicious JavaScript in a user's browser when they visit a crafted page or link.
Potential impact on your site
04Site Impact
Administrators and users visiting compromised pages risk session hijacking, credential theft, and unauthorized site modifications.
Conditions required to exploit
05Prerequisites
The victim must visit a page or click a link containing the malicious payload. No authentication required.
Key dates
06Disclosure timeline
March 25, 2026
CVE published
April 29, 2026
Record updated