CVE-2026-71573
High
Description
Joomla! Core - [20260802] - Improper CORS origin validation in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 - An improper implementation prevented configured CORS origins from being properly validated in CORS requests.
SeverityHigh
CVSS8.3
Exploit probability—
Product
Joomla\!
PublishedAug 18, 2026
First seenAug 18, 2026
Weakness typeCWE-93CWE-93
How to fix
Update
- joomla joomla\!5.4.8, 6.1.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| joomla joomla\! | 4.0.0 ≤ v < 5.4.8, 6.0.0 ≤ v < 6.1.3 | 5.4.8, 6.1.3 |
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