CVE-2025-54476: Joomla! Project Joomla! CMS

Medium severity, CVSS 4.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Improper handling of input could lead to an XSS vector in the checkAttribute method of the input filter framework class.

Affected products

• Joomla! Project Joomla! CMS: version 3.0.0-3.10.20 only; version 4.0.0-4.4.13 only; version 5.0.0-5.3.3 only

Published 2025-09-30. Last modified 2026-06-17.