CVE-2026-48807 Twig: Sandbox `__toString()` policy bypass via `Traversable` in `join` and `replace` filters

Twig is a template language for PHP. Prior to 3.27.0, the sandbox toString checks do not fully cover Traversable values passed to join and replace filters or operands evaluated by the in and not in operators, allowing contained Stringable objects to be coerced to strings without consulting the...

CVE-2026-47732 Twig Sandbox: multiple `__toString()` policy bypasses via unguarded string coercion points

Twig is a template language for PHP. Prior to 3.26.0, several Twig language constructs trigger PHP string coercion on a Stringable operand without consulting SecurityPolicy::checkMethodAllowed, allowing a sandboxed template author to invoke toString on objects reachable in the render context...

Sandbox: multiple `__toString()` policy bypasses via unguarded string coercion points

More info at https://symfony.com/cve-2026-47732...