Improper access control in Joomla! - CVE-2026-48904

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Main Vulnerability Database Vulnerabilities #VU132329

Improper access control in Joomla! - CVE-2026-48904

Published: May 26, 2026


Vulnerability identifier: #VU132329
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-48904
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Joomla!
Affected software:
Joomla!

Detailed vulnerability description

The vulnerability allows a remote user to escalate privileges.

The vulnerability exists due to improper access control in the com_users group editing webservice endpoint when handling webservice requests. A remote user can send a crafted request to escalate privileges.


How to mitigate CVE-2026-48904

Install security update from vendor's website.

Sources