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 1.6.2 and up to and including 3.9.10 are vulnerable.
Remediation
Update to Joomla! Core version 3.9.11 or latest
References
Related Vulnerabilities
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WordPress Plugin Re-attacher by BestWebSoft Cross-Site Scripting (1.0.8)
WordPress Plugin Easy Accordion-Best Accordion FAQ Cross-Site Scripting (2.0.21)