CVE-2026-46634
Twig: `template_from_string()` escapes a SourcePolicy-driven sandbox via synthesized template name
- State
- Published
- Severity
- 7.7 High
- Published
- Jul 14, 2026
- Updated
- Jul 29, 2026
- Reserved
- May 15, 2026
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__<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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.7 High | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | GitHub_M |
Weaknesses
- CWE-693 Protection Mechanism Failure
Affected Products
| Product | Versions |
|---|---|
Twigtwigphp |
|
References
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