GHSA-vcc8-phrv-43wj
Suggest an improvement- Source
- https://github.com/advisories/GHSA-vcc8-phrv-43wj
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-vcc8-phrv-43wj/GHSA-vcc8-phrv-43wj.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-vcc8-phrv-43wj
- Aliases
-
- CVE-2026-46635
- Related
- Published
- 2026-05-21T21:25:55Z
- Modified
- 2026-05-23T18:29:18.155884868Z
- Severity
-
- 2.1 (Low) CVSS_V4 - 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 CVSS Calculator
- Summary
- Twig: Sandbox property allowlist bypass via the `column` filter (array_column on objects)
- Details
-
Description
The
columnfilter passes its input straight to PHP's nativearray_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 reachesCoreExtension::getAttribute(),SandboxExtension::checkPropertyAllowed()is never consulted.An untrusted template author with
columnin theirallowedFilterslist can therefore read any public or magic property of any object reachable in the render context, regardless of theSecurityPolicyallowedPropertieslist. This is a variant of CVE-2024-51755 / GHSA-jjxq-ff2g-95vh that theArrayAccess-focused fix did not cover.Resolution
The
columnfilter 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.
- Database specific
{ "cwe_ids": [ "CWE-863" ], "github_reviewed": true, "github_reviewed_at": "2026-05-21T21:25:55Z", "nvd_published_at": null, "severity": "LOW" }- References
Affected packages
Packagist / twig/twig
Package
- Name
- twig/twig
- Purl
- pkg:composer/twig%2Ftwig
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed3.26.0