Critical severity9.8NVD Advisory· Published Jul 14, 2026· Updated Jul 29, 2026
CVE-2026-46634
CVE-2026-46634
Description
Twig is a template language for PHP. From 3.9.0 until 3.26.0, template_from_string() compiles an inner template under a synthesized __string_template__ name that can fall outside a SourcePolicyInterface sandbox decision, allowing a sandboxed template that can call template_from_string and include to render an inner template without security policy enforcement. This issue is fixed in version 3.26.0.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
twig/twigPackagist | >= 3.9.0, < 3.26.0 | 3.26.0 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/twigphp/Twig/commit/1cde8f2b62463f85d47995fc25f8241cb409d915nvdPatch
- github.com/advisories/GHSA-24x9-r6q4-q93wghsaADVISORY
- github.com/twigphp/Twig/security/advisories/GHSA-24x9-r6q4-q93wnvdVendor AdvisoryWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/twig/twig/CVE-2026-46634.yamlghsaWEB
- github.com/twigphp/Twig/releases/tag/v3.26.0nvdRelease Notes
- symfony.com/cve-2026-46634ghsaWEB
News mentions
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