GHSA-vcc8-phrv-43wj
Twig: Sandbox property allowlist bypass via the `column` filter (array_column on objects)
Quick fix
GHSA-vcc8-phrv-43wj — twig/twig: upgrade to the fixed version with the command below.
composer require twig/twig:^3.26.0Details
### Description
The `column` filter passes its input straight to PHP's native `array_column()`. When the array elements are objects, `array_column()` reads `$obj->$name` (and `$obj->$index`) directly, including invoking `__get`/`__isset`. Because this property read happens entirely in PHP native code and never reaches `CoreExtension::getAttribute()`, `SandboxExtension::checkPropertyAllowed()` is never consulted.
An untrusted template author with `column` in their `allowedFilters` list can therefore read any public or magic property of any object reachable in the render context, regardless of the `SecurityPolicy` `allowedProperties` list. This is a variant of CVE-2024-51755 / GHSA-jjxq-ff2g-95vh that the `ArrayAccess`-focused fix did not cover.
### Resolution
The `column` filter now routes object property reads through the sandbox-aware attribute accessor so the property allowlist is enforced.
### Credits
Twig: would like to thank Claude Mythos Preview (via Project Glasswing) for reporting the issue and providing the fix.
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