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 3.9.18 are vulnerable.
Remediation
Update to Joomla! Core version 3.9.19 or latest
References
Related Vulnerabilities
MySQL Improper Link Resolution Before File Access ('Link Following') Vulnerability (CVE-2005-0004)
WordPress 4.2.x Multiple Vulnerabilities (4.2 - 4.2.24)
Internet Information Services Improper Input Validation Vulnerability (CVE-1999-0867)
PostgreSQL Improper Access Control Vulnerability (CVE-2019-10128)
MediaWiki Incorrect Default Permissions Vulnerability (CVE-2011-4361)