CVSS base score
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
What the vulnerability does
Joomla Extension - joomshaper.com - Stored Cross-Site Scripting (XSS) in MegaMenu Layout Container & Embed Inputs in Helix Ultimate < 2.2.10 - Unsanitized column and item configuration values stored within the MegaMenu layout JSON were rendered without complete contextual escaping, allowing injection of malicious HTML/JS. Stricter sanitization and tag allowlists via `InputFilter` and `htmlspecialchars` were implemented.
Explanation of Vulnerability in Simple Terms
Helix Ultimate extension for Joomla contains a cross-site scripting (XSS) vulnerability that allows authenticated administrators to inject malicious scripts. An attacker with high-level admin privileges can craft input that executes arbitrary JavaScript in other users' browsers when they view affected pages. This vulnerability requires admin-level access to exploit.
What an attacker can do
Inject malicious JavaScript that runs in other users' browsers when they view affected pages.
Potential impact on your site
A compromised admin account can inject scripts to steal data, modify content, or redirect users to malicious sites.
Conditions required to exploit
Attacker must have high-level administrator privileges on the Joomla site.
Key dates
External resources
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