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Joomla! CMS Output Escaping Vulnerability in com_contenthistory Component Leading to Cross-Site Scripting

Vulnerability

A cross-site scripting (XSS) vulnerability has been identified in the Joomla! CMS content history component. This issue arises from a lack of proper output escaping, which creates an XSS vector. The vulnerability affects Joomla! CMS versions 3.0.0 through 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 can upgrade to Joomla! CMS version 5.4.6 or 6.1.1 to address this vulnerability.

Added: May 26, 2026, 11:19 PM
Updated: May 26, 2026, 11:19 PM

Vulnerability Rating

Custom Algorithm
spread
7.6
impact
1.7
exploitability
5.2
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.