Description
Joomla! Core is prone to a security bypass vulnerability. Exploiting this issue may allow attackers to perform otherwise restricted actions and subsequently bypass ACL's. Joomla! Core versions 3.x.x ranging from 3.2.0 and up to and including 3.9.4 are vulnerable.
Remediation
Update to Joomla! Core version 3.9.5 or latest
References
Related Vulnerabilities
Drupal Core 8.8.0 Security Bypass (8.8.0 - 8.8.0)
WordPress Plugin NextGEN Gallery-WordPress Gallery Arbitrary File Upload (2.1.10)
WordPress 4.0.x Arbitrary File Deletion Vulnerability (4.0 - 4.0.23)
WordPress Plugin Dynamic Featured Image Unspecified Vulnerability (1.0.3)
WordPress Plugin Download Manager Cross-Site Scripting (3.2.46)