CVE-2026-48958
High
Description
An improper access check allows unauthorized users to create custom fields via webservices endpoints.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Joomla\!
PublishedJul 7, 2026
First seenJul 7, 2026
Weakness typeCWE-284Improper access control
How to fix
Update
- joomla joomla\!5.4.7, 6.1.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| joomla joomla\! | 4.0.0 ≤ v < 5.4.7, 6.0.0 ≤ v < 6.1.2 | 5.4.7, 6.1.2 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.