Description
Joomla! Core is prone to a security bypass vulnerability. Exploiting this issue may allow attackers to bypass intended access restrictions and perform otherwise restricted actions. Joomla! Core versions ranging from 2.5.0 and up to and including 3.9.15 are vulnerable.
Remediation
Update to Joomla! Core version 3.9.16 or latest
References
https://hocvahoc.me/2020/03/13/my-journey-to-find-out-joomlas-cvepart-1/
https://github.com/HoangKien1020/Joomla-CVE/tree/master/CVE-2020-10238
Related Vulnerabilities
MyBB Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2010-4625)
Liferay DXP URL Redirection to Untrusted Site ('Open Redirect') Vulnerability (CVE-2022-28977)
WordPress Permissions, Privileges, and Access Controls Vulnerability (CVE-2013-2203)
Moodle Improper Access Control Vulnerability (CVE-2016-3729)