Improper access control in Joomla! - CVE-2020-11891
Published: April 22, 2020
Vulnerability identifier: #VU27079
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-11891
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in "com_users" access level editing function. A remote attacker can bypass implemented security restrictions and edit the usergroups.
Affected software
Joomla!
How to mitigate CVE-2020-11891
Install updates from vendor's website.
Joomla! - update to 3.9.17