medium5.3
CVE-2026-90918
Joomla!
Impact
Joomla! Core - [20260908] - Core - XSS in HTML Mail Templates in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - The mail template feature lacks an escaping mechanism, causing XSS vectors in multiple extensions.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Joomla | Joomla\! | from 4.0.0 before 5.4.8 from 6.0.0 before 6.1.3 |