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6.5
Fusion Builder: Stored Cross-Site Scripting Allows Malicious Code Injection
CVE-2026-25472
Summary
Fusion Builder, a website building tool, has a security flaw that allows hackers to inject malicious code into its pages. This can happen when a user enters a specially crafted input, and the code is stored and executed on other users' browsers. To stay safe, update Fusion Builder to the latest version, which is 3.14.4 or later.
Original title
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeFusion Fusion Builder fusion-builder allows Stored XSS.This issue affects Fusion Builder: ...
Original description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeFusion Fusion Builder fusion-builder allows Stored XSS.This issue affects Fusion Builder: from n/a through <= 3.14.3.
nvd CVSS3.1
6.5
Vulnerability type
CWE-79
Cross-site Scripting (XSS)
Published: 19 Feb 2026 · Updated: 11 Mar 2026 · First seen: 6 Mar 2026