CVE-2026-90906: Joomla!

High severity, CVSS 8.3. EPSS: 0.2% chance of exploitation in the next 30 days.

Joomla! Core - [20260901] - XSS in HTMLHelper::link method in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - Lack of escaping leads to XSS vulnerabilities in the link method of the HTML Helper.

Affected products

• Joomla! Joomla!: from 1.5.0, before 5.4.8 (fixed in 5.4.8); from 6.0.0, before 6.1.3 (fixed in 6.1.3)

Published 2026-09-29. Last modified 2026-10-06.