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
WordPress Plugin Re-attacher by BestWebSoft Cross-Site Scripting (1.0.8)
WordPress Plugin Calendar Event Multi View SQL Injection (1.01)
WordPress Plugin WP Easy Slideshow Multiple Cross-Site Request Forgery Vulnerabilities (1.0.3)
WordPress Plugin Custom Body Class Cross-Site Request Forgery (0.6.0)
Jenkins Missing Release of Resource after Effective Lifetime Vulnerability (CVE-2018-1999043)