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.