Symfony 5.4.38 has just been released.
Here is the list of the most important changes since 5.4.37:

bug #54400 [HttpClient] stop all server processes after tests have run (@xabbuh)
bug #54425 [TwigBridge] Remove whitespaces from block form_help output (@rosier)
bug #54372 [Config] Fix YamlReferenceDumper handling of array examples (@MatTheCat)
bug #54362 [Filesystem] preserve the file modification time when mirroring directories (@xabbuh)
bug #54121 [Messenger] Catch TableNotFoundException in MySQL delete (@acbramley)
bug #54271 [DoctrineBridge] Fix deprecation warning with ORM 3 when guessing field lengths (@eltharin)
bug #54306 Throw TransformationFailedException when there is a null bytes injection (@sormes)
bug #54148 [Serializer] Fix object normalizer when properties has the same name as their accessor (@NeilPeyssard)
bug #54305 [Cache][Lock] Identify missing table in pgsql correctly and address failing integration tests (@arifszn)
bug #54292 [FrameworkBundle] Fix mailer config with XML (@lyrixx)
bug #54298 [Filesystem] Fix str_contains deprecation (@NeilPeyssard)
bug #54248 [Security] Correctly initialize the voter property (@aschempp)
bug #54201 [Lock] Check the correct SQLSTATE error code for MySQL (@edomato)
bug #54252 [Lock] compatiblity with redis cluster 7 (@bastnic)
bug #54219 [Validator] Allow BICs’ first four characters to be digits (@MatTheCat)
bug #54239 [Mailer] Fix sendmail transport not handling failure (@aboks)
bug #54207 [HttpClient] Lazily initialize CurlClientState (@arjenm)
bug #53865 [Workflow]Fix Marking when it must contains more than one tokens (@lyrixx)
bug #54187 [FrameworkBundle] Fix PHP 8.4 deprecation on ReflectionMethod (@alexandre-daubois)

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