Symfony 5.3.0-RC1 released

Symfony 5.3.0-RC1 has just been released. Here is a list of the most important changes:

security #cve-2021-21424 [SecurityCore] Fix user enumeration via response body on invalid credentials (@chalasr) bug #41275 Fixes Undefined method call (@faizanakram99) feature #41175 [Security] [RememberMe] Add support for parallel requests doing remember-me re-authentication (@Seldaek) bug #41269 [SecurityBundle] Remove invalid unused service (@chalasr) feature #41247 [Security] Deprecate the old authentication mechanisms (@chalasr) bug #41139 [Security] [DataCollector] Remove allows anonymous information in datacollector (@ismail1432) bug #41254 [SecurityHttp] Fix handling secure: auto using the new RememberMeAuthenticator (@chalasr) bug #41230 [FrameworkBundle][Validator] Fix deprecations from Doctrine Annotations+Cache (@derrabus) bug #41206 [Mailer] Fix SES API call with UTF-8 Addresses (@jderusse) bug #41240 Fixed deprecation warnings about passing null as parameter (@derrabus) bug #41241 [Finder] Fix gitignore regex build with “” (@mvorisek) bug #41224 [HttpClient] fix adding query string to relative URLs with scoped clients (@nicolas-grekas) bug #41233 [DependencyInjection][ProxyManagerBridge] Don’t call clas _exists() on null (@derrabus) bug #41214 [Console] fix registering command aliases when using the new “cmd|alias” syntax for names (@nicolas-grekas) bug #41211 [Notifier] Add missing charset to content-type for Slack notifier (@norkunas) bug #41210 [Console] Fix Windows code page support (@orkan)

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