[20260706] - Core - XSS in com_installer

Project: Joomla!
SubProject: CMS
Impact: Moderate
Severity: Moderate
Probability: Low
Versions: 4.0.0-5.4.6,6.0.0-6.1.1
Exploit type: XSS
Reported Date: 2026-05-21
Fixed Date: 2026-07-07
CVE Number: CVE-2026-48952

Description

Lack of escaping leads to an XSS vulnerability in the update list view of com_installer.

Affected Installs

Joomla! CMS versions 4.0.0-5.4.5,6.0.0-6.1.1

Solution

Upgrade to version 5.4.7, 6.1.2

Contact

The JSST at the Joomla! Security Centre.

Reported By: 廖双