CVE-2021-32693

Symfony is a PHP framework for web and console applications and a set of
reusable PHP components. A vulnerability related to firewall authentication
is in Symfony starting with version 5.3.0 and prior to 5.3.2. When an
application defines multiple firewalls, the token authenticated by one of
the firewalls was available for all other firewalls. This could be abused
when the application defines different providers for each part of the
application, in such a situation, a user authenticated on a part of the
application could be considered authenticated on the rest of the
application. Starting in version 5.3.2, a patch ensures that the
authenticated token is only available for the firewall that generates it.