CVE-2026-46638: CWE-693: Protection Mechanism Failure in twigphp Twig
Twig, a PHP template language, has a protection mechanism failure vulnerability prior to version 3.26.0. The issue involves the sandbox feature where {% sandbox %}{% include %} can include a template previously loaded outside the sandbox without re-checking security policies. This allows cached templates to use tags, filters, and functions that should have been denied by SecurityPolicy::checkSecurity(). The vulnerability is fixed in version 3.26.0.
AI Analysis
Technical Summary
CVE-2026-46638 describes a protection mechanism failure in twigphp Twig versions before 3.26.0. Specifically, when using the sandbox feature with the include tag, a template previously loaded outside the sandbox context can be included without re-invoking the security checks enforced by SecurityPolicy::checkSecurity(). This flaw permits the cached template to execute tags, filters, and functions that the sandbox policy should have restricted. The issue is resolved in Twig version 3.26.0.
Potential Impact
An attacker able to influence template inclusion could bypass sandbox security restrictions, potentially executing unauthorized tags, filters, or functions within Twig templates. This could lead to unintended code execution or information disclosure depending on the context of template usage. The CVSS 4.0 score of 6 (medium severity) reflects a network attack vector with low privileges required and partial impact on confidentiality and integrity.
Mitigation Recommendations
Upgrade Twig to version 3.26.0 or later, where this vulnerability is fixed. No other mitigations are indicated. Patch status is confirmed fixed in 3.26.0.
CVE-2026-46638: CWE-693: Protection Mechanism Failure in twigphp Twig
Description
Twig, a PHP template language, has a protection mechanism failure vulnerability prior to version 3.26.0. The issue involves the sandbox feature where {% sandbox %}{% include %} can include a template previously loaded outside the sandbox without re-checking security policies. This allows cached templates to use tags, filters, and functions that should have been denied by SecurityPolicy::checkSecurity(). The vulnerability is fixed in version 3.26.0.
CVSS v4.0
Score 6.0medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-46638 describes a protection mechanism failure in twigphp Twig versions before 3.26.0. Specifically, when using the sandbox feature with the include tag, a template previously loaded outside the sandbox context can be included without re-invoking the security checks enforced by SecurityPolicy::checkSecurity(). This flaw permits the cached template to execute tags, filters, and functions that the sandbox policy should have restricted. The issue is resolved in Twig version 3.26.0.
Potential Impact
An attacker able to influence template inclusion could bypass sandbox security restrictions, potentially executing unauthorized tags, filters, or functions within Twig templates. This could lead to unintended code execution or information disclosure depending on the context of template usage. The CVSS 4.0 score of 6 (medium severity) reflects a network attack vector with low privileges required and partial impact on confidentiality and integrity.
Mitigation Recommendations
Upgrade Twig to version 3.26.0 or later, where this vulnerability is fixed. No other mitigations are indicated. Patch status is confirmed fixed in 3.26.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-15T20:11:54.584Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a56aea268715ace4342b102
Added to database: 07/14/2026, 21:48:18 UTC
Last enriched: 07/21/2026, 22:48:29 UTC
Last updated: 08/24/2026, 22:52:11 UTC
Views: 51
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