Symfony 5.4.18 has just been released.
Here is the list of the most important changes since 5.4.17:

bug #48823 [Cache] Fix possibly null value passed to preg_match() in RedisTrait (@chalasr)
bug #48816 [Cache] Fix for RedisAdapter without auth parameter (@rikvdh)

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.

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