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Symfony Blog

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

Dave Liddament will explain how to build a reliable enforcement layer for AI assistant outputs using custom PHPStan rules, covering AST manipulation with nikic/php-parser and teaching you how to turn one-off AI corrections into team-wide invariants.
May 27, 2026 #Conferences
Symfony 8.1 improves JSON handling with support for value objects, better date handling, default options, and custom JsonPath functions.
May 27, 2026 #Living on the edge
Sandbox `__toString()` policy bypass via `Traversable` in `join`/`replace` filters and via the `in`/`not in` operators
Sandbox `__toString()` policy bypass via dynamic mapping keys
Sandbox filter, tag and function allow-list bypass when sandbox state changes between renders for a cached `Template`
Sandbox property allowlist bypass via the `column` filter under `SourcePolicyInterface`
Sandbox state regression in deprecated internal wrappers in `src/Resources/core.php`
May 27, 2026 #Releases #Twig
Join Sean Mackay at SymfonyDay Montreal as he breaks down the key Symfony features (Doctrine, Messenger, Events) that transformed Pimcore into a robust, update-friendly platform
May 27, 2026 #Conferences
May 27, 2026 #Releases