CVE-2026-46635
Twig: Sandbox property allowlist bypass via the `column` filter (array_column on objects)
Description
### 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.
How to fix CVE-2026-46635
To remediate CVE-2026-46635, upgrade the affected package to a fixed version below.
- —no fix listed
- —upgrade to 3.26.0 or later
Is CVE-2026-46635 being exploited?
No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2026-46635.
Affected packages (2)
- from 0
- from 0, < 3.26.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N |