Symfony 5.3.10 has just been released. Here is a list of the most
important changes:

bug #43798 [Dotenv] Duplicate $_SERVER values in $_ENV if they don’t exist (@fancyweb)
bug #43799 [PhpUnitBridge] fix symlink to bridge in docker by making its path relative (@nicolas-grekas)
bug #43801 [TwigBundle] fix auto-enabling assets/expression/routing/yaml/workflow extensions (@nicolas-grekas)
bug #43790 [String] Fix inflector for „zombies“ (@acodispo)
bug #43781 [Messenger] Fix TraceableMessageBus implementation so it can compute caller even when used within a callback (@Ocramius)
bug #43589 [Lock] Fix incorrect return type in PostgreSqlStore (@GromNaN)
bug #43627 [Framework][Secrets] Fix service definition when local vault is disabled (@GromNaN)
bug #43579 [DependencyInjection] Fix autowiring tagged arguments from attributes (@Okhoshi)
bug #43655 [VarDumper] Fix dumping twig templates found in exceptions (@event15)
bug #43484 [Messenger] Fix Redis Transport when username is empty (@villfa)
bug #43659 Fix logging of impersonator introduced in 5.3 (@johanwilfer)
bug #43630 [Messenger] Fix unwrapping the Postgres connection in DBAL 3 (@derrabus)
bug #43568 [Messenger] fix: TypeError in PhpSerializer::encode() (@dsech)
bug #43591 [Config] Fix files sorting in GlobResource (@lyrixx)
bug #43569 [HttpClient] fix collecting debug info on destruction of CurlResponse (@nicolas-grekas)
bug #43545 [DependencyInjection] fix „url“ env var processor (@nicolas-grekas)
bug #43537 [HttpClient] fix RetryableHttpClient when a response is canceled (@nicolas-grekas)
bug #43533 [Uid] fix 4 missing bits of entropy in UUIDv4 (@nicolas-grekas)
bug #43376 [Runtime] Fix class validation of composer „extra.runtime.class“ (@piku235)
bug #43413 [VarDumper] Fix error with uninitialized XMLReader (@villfa)
bug #43439 [Notifier] [RocketChat] Fix undefined index for message id (@OskarStark)
bug #43408 [Notifier] Fix ‚Undefined array key‘ error in FirebaseTransport (@villfa)
bug #43388 [Validator] Fixes URL validation for single-char subdomains (@DfKimera)
bug #41534 [Form] Fix ChoiceType to effectively set and use translator (@marek-binkowski-sim)
bug #43364 [Translation] Use symfony default locale when pulling translations from providers (@Yoann MOROCUTTI)
bug #43333 [HttpClient] fix missing kernel.reset tag on TraceableHttpClient services (@nicolas-grekas)
bug #43302 [Cache] Commit items implicitly only when deferred keys are requested (@Sergey Belyshkin)
bug #43330 [Cache][Lock] fix SQLSRV throws for method_exists() (@GDmac)
bug #43270 [VarDumper] Fix handling of „new“ in initializers on PHP 8.1 (@nicolas-grekas)
bug #43312 [Translation] [Bridge] [Lokalise] do not export empty strings (@taranovegor)
bug #43277 [DependencyInjection] fix support for „new“ in initializers on PHP 8.1 (@nicolas-grekas)
bug #43243 [HttpClient] accept headers when CURLE_RECV_ERROR is received before the content (@nicolas-grekas)
bug #43208 [Serializer] Attributes that extend serializers annotations are not ignored by the serialization process (@Alexander Onatskiy)
bug #43241 [PhpUnitBridge] Do not override correct triggering file for return type deprecations (@wouterj)
bug #43204 [Serializer] Fix denormalizing XML array with empty body (5.x) (@alexandre-daubois)
bug #43205 [Serializer] Fix denormalizing XML array with empty body (4.4) (@alexandre-daubois)
bug #43235 [Security] Remove annoying deprecation in UsageTrackingTokenStorage (@chalasr)

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