Drupal Improper Authentication Vulnerability - CVE-2019-10911
In Symfony before 2.7.51 2.8.x before 2.8.50 3.x before 3.4.26 4.x before 4.1.12 and 4.2.x before 4.2.7 a vulnerability would allow an attacker to authenticate as a privileged user on sites with user registration and remember me login functionality enabled. This is related to symfony/security.