Bug 2500740 (CVE-2026-46639)

Summary: CVE-2026-46639 twig/twig: Twig: Sandbox bypass allows information disclosure and method invocation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in Twig, a template language for PHP. An attacker with write access to a sandboxed Twig template can bypass security restrictions due to an issue in object-destructuring assignment. This allows them to read public properties or invoke public methods on objects, leading to unauthorized information disclosure and potential manipulation of application logic.
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Description OSIDB Bzimport 2026-07-14 22:03:49 UTC 
Twig is a template language for PHP. From 3.24.0 until 3.26.0, object-destructuring assignment compiles CoreExtension::getAttribute() with the sandbox argument hardcoded to false, disabling property and method policy checks and allowing an attacker with write access to a sandboxed Twig template to read public properties or invoke public getters on objects passed to the template engine. This issue is fixed in version 3.26.0.