CVE-2026-46634

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/twigphp/Twig/commit/1cde8f2b62463f85d47995fc25f8241cb409d915	Patch
https://github.com/twigphp/Twig/releases/tag/v3.26.0	Release Notes
https://github.com/twigphp/Twig/security/advisories/GHSA-24x9-r6q4-q93w	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:symfony:twig:*:*:*:*:*:*:*:*

History

24 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) Twig es un lenguaje de plantillas para PHP. Desde la versión 3.9.0 hasta la 3.26.0, template_from_string() compila una plantilla interna bajo un nombre sintetizado __string_template__[hash] que puede quedar fuera de una decisión de sandbox de SourcePolicyInterface, permitiendo que una plantilla en sandbox que puede llamar a template_from_string e include renderice una plantilla interna sin la aplicación de la política de seguridad. Este problema está solucionado en la versión 3.26.0.

Information

Published : 2026-07-14 22:16

Updated : 2026-10-24 22:10

NVD link : CVE-2026-46634

Mitre link : CVE-2026-46634

CVE.ORG link : CVE-2026-46634

JSON object : View

Products Affected

symfony

twig

CWE

CWE-693

Protection Mechanism Failure

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