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.
Published: 2026-07-14
Score: 7.7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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Remediation

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Tracking

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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
History

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'}

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-07-14T21:19:17.804Z

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

Link: CVE-2026-46634

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses
  • CWE-693

    Protection Mechanism Failure