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Joomla! Framework Inadequate Content Filtering Leading to Cross-Site Scripting Vulnerability

Vulnerability

A cross-site scripting (XSS) vulnerability has been identified in the Joomla! Framework. This issue arises from inadequate content filtering in the checkAttribute methods, which can be exploited in various components. The vulnerability affects Joomla! CMS versions 3.0.0 prior to 5.4.5 and 6.0.0 prior to 6.1.0.

Impact

Exploitation of this vulnerability allows for cross-site scripting, where an attacker can inject malicious scripts that are executed in the context of the user's browser.

Remediation

Users are advised to upgrade to Joomla! CMS version 5.4.6 or 6.1.1.

Added: May 26, 2026, 10:56 PM
Updated: May 26, 2026, 10:56 PM

Vulnerability Rating

Custom Algorithm
spread
7.6
impact
1.7
exploitability
6.5
remediation
7.7
relevance
9.6
threat
0.0
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.