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
WordPress Permissions, Privileges, and Access Controls Vulnerability (CVE-2008-2146)
WordPress Plugin rtMedia for WordPress, BuddyPress and bbPress Cross-Site Scripting (3.10.1)
IBM WebSEAL Observable Differences in Behavior to Error Inputs Vulnerability (CVE-2020-4661)
Apache HTTP Server Use After Free Vulnerability (CVE-2019-0211)