Description
Drupal Core is prone to a security bypass vulnerability. Exploiting this issue may allow attackers to sneak in new line character in headers and pass untrusted values, which would be then improperly parsed. Drupal Core versions 9.2.x ranging from 9.2.0 and up to and including 9.2.15 are vulnerable.
Remediation
Update to Drupal Core version 9.2.16 or latest
References
Related Vulnerabilities
Drupal URL Redirection to Untrusted Site ('Open Redirect') Vulnerability (CVE-2010-2471)
WordPress Plugin Advanced Forms for ACF Pro Security Bypass (1.6.8)
PHP Out-of-bounds Read Vulnerability (CVE-2018-10549)
WordPress Plugin RAYS Grid Cross-Site Request Forgery (1.2.2)
WordPress Plugin CSS Plus Multiple Unspecified Vulnerabilities (1.3.1)