Description
Drupal Core is prone to a security bypass vulnerability. Exploiting this issue may allow attackers to bypass certain security restrictions and perform otherwise restricted actions. Drupal Core versions 8.9.x ranging from 8.9.0 and up to and including 8.9.5 are vulnerable.
Remediation
Update to Drupal Core version 8.9.6 or latest
References
Related Vulnerabilities
MyBB Permissions, Privileges, and Access Controls Vulnerability (CVE-2010-4624)
WordPress Plugin Calculated Fields Form Cross-Site Scripting (1.0.353)
IBM RTC Improper Restriction of XML External Entity Reference Vulnerability (CVE-2016-0284)
WordPress Plugin WP Symposium Multiple Vulnerabilities (14.05.02)
WordPress Plugin Coming Soon Possible Remote Code Execution (1.1.3)