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Symfony Blog

All about Symfony releases, new Symfony features, and other important announcements

In Symfony 7.3, the new JsonStreamer component provides a high-performance, low-memory solution for encoding and decoding JSON at scale.
May 20, 2025 #Living on the edge ❤️ 16 👍 11 🚀 11 🎉 9
Symfony UX CVE-2025-47946: Unsanitized HTML attribute injection via ComponentAttributes
May 19, 2025 #Security Advisories 👍 2
Symfony 7.3 adds YAML flags to force quoted strings, compact nested maps, and dump empty entries.
May 19, 2025 #Living on the edge ❤️ 2 👍 8 🚀 3 🎉 1
This week, development activity focused on polishing Symfony 7.3 ahead of its final release in two weeks. We also continued publishing articles highlighting the new features of Symfony 7.3 and shared updates about the upcoming SymfonyOnline June 2025 conference.
May 18, 2025 #A week of symfony
Join #SymfonyOnline June 2025 to hear from Symfony’s creator, Fabien Potencier, in his keynote: “Symfony in 2025: Scaling to Zero.” A visionary take on the past 20 years — and where we’re headed next ! 🚀
May 16, 2025 #Conferences
Symfony 7.3 adds service closure shortcuts, resource tags, and environment-aware aliases to streamline your service configuration.
May 16, 2025 #Living on the edge ❤️ 14 👍 5 🚀 7 🎉 5
Symfony 7.3 introduces namespace-based cache invalidation, allowing you to group and invalidate related cache items efficiently.
May 15, 2025 #Living on the edge ❤️ 7 👍 6 🚀 2 🎉 1
Join #SymfonyOnline June 2025 to see how Jonathan Wage built a real automated trading system using Symfony’s best tools in “Building an Automated Trading System with Symfony” 🚀💹
May 14, 2025 #Conferences
Symfony 7.3 introduces security improvements including safer session password handling, OAuth2 token introspection, OIDC discovery, fine-grained error exposure, and callable-based access checks.
May 14, 2025 #Living on the edge 👀 1 ❤️ 1 👍 6 🚀 6 🎉 3
Join us at #SymfonyOnline June 2025 to explore the magic behind Symfony’s container with Oliver Kossin in "Demystify the Magic of the Container". 🪄
May 13, 2025 #Conferences