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.

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-6311-1 php-twig security update
Github GHSA Github GHSA GHSA-24x9-r6q4-q93w Twig: `template_from_string()` escapes a SourcePolicy-driven sandbox via synthesized template name
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 29 Jul 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 15 Jul 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Twigphp
Twigphp twig
Vendors & Products Twigphp
Twigphp twig

Tue, 14 Jul 2026 21:45:00 +0000

Type Values Removed Values Added
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.
Title Twig: `template_from_string()` escapes a SourcePolicy-driven sandbox via synthesized template name
Weaknesses CWE-693
References
Metrics cvssV4_0

{'score': 7.7, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-07-29T18:26:17.523Z

Reserved: 2026-05-15T20:11:54.583Z

Link: CVE-2026-46634

cve-icon Vulnrichment

Updated: 2026-07-29T18:24:03.183Z

cve-icon NVD

Status : Analyzed

Published: 2026-07-14T22:16:56.130

Modified: 2026-07-29T19:16:46.290

Link: CVE-2026-46634

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-31T04:45:17Z

Weaknesses