Improper access control in Joomla! - CVE-2026-48958
Published: July 8, 2026
Vulnerability identifier: #VU137046
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-48958
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. A remote administrator can bypass implemented security restrictions and create custom fields via webservices endpoints
Affected software
Joomla!
How to mitigate CVE-2026-48958
Install updates from vendor's website.
Joomla! - addressed in versions 5.4.7, 6.1.2