Description
Lack of input filtering leads to an XSS vector in the HTML filter code related to data URLs in img tags.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Joomla! Project | Joomla! CMS | 4.0.0-5.4.1, 6.0.0-6.0.1 | — |
Advisories 1
- WID-SEC-2026-0028 Joomla: Mehrere Schwachstellen ermöglichen Cross-Site Scripting BSI CERT-Bund (WID) · Jan 6, 2026