Description
Drupal Core is prone to an arbitrary file overwrite vulnerability. This can be coupled with other existing vulnerabilities to affect the vulnerable application in various ways. Drupal Core versions 8.9.x ranging from 8.9.0 and up to and including 8.9.12 are vulnerable.
Remediation
Update to Drupal Core version 8.9.13 or latest
References
Related Vulnerabilities
Joomla Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2011-2889)
MySQL CVE-2020-14869 Vulnerability (CVE-2020-14869)
MySQL CVE-2019-2938 Vulnerability (CVE-2019-2938)
WordPress Plugin EZ Portfolio Multiple Cross-Site Scripting Vulnerabilities (1.0.1)
WordPress Plugin iThemes Security (formerly Better WP Security) SQL Injection (7.0.2)