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__<hash> 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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/twigphp/Twig/commit/1cde8f2b62463f85d47995fc25f8241cb409d915 Patch
- https://github.com/twigphp/Twig/security/advisories/GHSA-24x9-r6q4-q93w Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.7 · symfonyNVD modified 2026-10-24 22:10
Affected (CPE criteria) 1
cpe:2.3:a:symfony:twig:*:*:*:*:*:*:*:*