Symfony 5.4.20 has just been released.
Here is the list of the most important changes since 5.4.19:

bug #49141 [HttpFoundation] Fix bad return type in IpUtils::checkIp4() (@tristankretzer)
bug #49126 [DependencyInjection] Fix order of arguments when mixing positional and named ones (@nicolas-grekas)
bug #49104 [HttpClient] Fix collecting data non-late for the profiler (@nicolas-grekas)
bug #49103 [Security/Http] Fix compat of persistent remember-me with legacy tokens (@nicolas-grekas)
security #cve-2022-24895 [Security/Http] Remove CSRF tokens from storage on successful login (@nicolas-grekas)
security #cve-2022-24894 [HttpKernel] Remove private headers before storing responses with HttpCache (@nicolas-grekas)

Want to upgrade to this new release? Because Symfony protects
backwards-compatibility very closely, this should be quite easy. Use
SymfonyInsight upgrade reports
to detect the code you will need to change in your project and
read our upgrade
documentation to learn more.

Want to be notified whenever a new Symfony release is published? Or when a
version is not maintained anymore? Or only when a security issue is fixed?
Consider subscribing to the Symfony Roadmap Notifications.

Symfony Blog

Read More