Symfony 7.4.14 has been released with a broad set of bug fixes and minor improvements across many components. Key fixes include Serializer corrections for constructor-only objects, CSV headers handling, and nested object denormalization; Cache compatibility fixes for the Relay extension 0.30.0 and DBAL 4.5; ObjectMapper fixes for private properties, fatal errors on unreadable properties, and consistent existing-object mapping; security hardening around unsafe unserialize() calls and __toString trampolines; AssetMapper stale cache fix in long-running runtimes; and numerous translation updates across multiple languages. The release also includes minor tooling improvements such as PHPStan rules for non-constant-time comparisons and unsafe unserialize detection.
