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CVE-2026-46636

CVE-2026-46636 · Twig: Sandbox method allowlist bypass via `Markup` subclass

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Twig is a template language for PHP. From version 1.0.0 to before version 3.27.0, SecurityPolicy::checkMethodAllowed() unconditionally whitelists all method calls on instances of Twig\Markup. Twig\Markup is not final, so subclasses inherit the bypass. An application that passes an object of a Markup-derived class into a sandboxed template (typically to mark a chunk of HTML as safe) inadvertently exposes every public method of that subclass to template authors, regardless of the configured allowedMethods list. This issue has been patched in version 3.27.0.

CVSS 8.7 · High · EPSS 0.6% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • twig

    Versions
    • >= 1.0.0, < 3.27.0: Affected

    No fix published

  • php-twig Debian:12

    Versions
    • 3.10.1-1
    • 3.10.3-1
    • 3.11.0-1
    • 3.13.0-1
    • 3.14.0-1
    • 3.14.0-2
    • 3.14.0-3
    • 3.14.0-4
    • 3.14.2-1
    • 3.14.2-2
    • 3.14.2-3
    • 3.15.0-1
    • 3.15.0-2
    • 3.17.1-1
    • 3.17.1-2
    • 3.18.0-1
    • 3.18.0-2
    • 3.18.0-4
    • 3.18.0-5
    • 3.18.0-6
    • 3.18.0-7
    • 3.19.0-1
    • 3.19.0-1~bootstrap
    • 3.20.0-1
    • 3.20.0-1~bootstrap
    • 3.20.0-2
    • 3.21.1-1
    • 3.21.1-2
    • 3.21.1-3
    • 3.22.0-1
    • 3.22.0-2
    • 3.22.1-1
    • 3.22.1-2
    • 3.22.1-3
    • 3.22.2-1
    • 3.22.2-2
    • 3.23.0-1
    • 3.23.0-2
    • 3.24.0-1
    • 3.26.0-1
    • 3.27.0-1
    • 3.27.1-1
    • 3.28.0-1
    • 3.5.1-1
    • 3.5.1-1+deb12u1
    • 3.5.1-1+deb12u2
    • 3.5.1-1+deb12u3
    • 3.6.0-1
    • 3.6.1-1
    • 3.7.0-1
    • 3.7.1-1
    • 3.7.1-2
    • 3.7.1-3
    • 3.8.0-1
    • 3.8.0-2
    • 3.8.0-3
    • 3.8.0-4
    • 3.9.3-1
    • 4.0.0~alpha1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • php-twig Debian:13

    Versions
    • 3.20.0-2
    • 3.21.1-1
    • 3.21.1-2
    • 3.21.1-3
    • 3.22.0-1
    • 3.22.0-2
    • 3.22.1-1
    • 3.22.1-2
    • 3.22.1-3
    • 3.22.2-1
    • 3.22.2-2
    • 3.23.0-1
    • 3.23.0-2
    • 3.24.0-1
    • 3.26.0-0+deb13u1
    • 3.26.0-1
    Affected ranges
    • ECOSYSTEM: < 3.27.0-0+deb13u1

    Update to 3.27.0-0+deb13u1

  • php-twig Debian:14

    Versions
    • 3.20.0-2
    • 3.21.1-1
    • 3.21.1-2
    • 3.21.1-3
    • 3.22.0-1
    • 3.22.0-2
    • 3.22.1-1
    • 3.22.1-2
    • 3.22.1-3
    • 3.22.2-1
    • 3.22.2-2
    • 3.23.0-1
    • 3.23.0-2
    • 3.24.0-1
    • 3.26.0-1
    Affected ranges
    • ECOSYSTEM: < 3.27.0-1

    Update to 3.27.0-1

  • php-twig Ubuntu:Pro:20.04:LTS

    Versions
    • 2.11.3-2
    • 2.12.1-1
    • 2.12.2-1
    • 2.12.3-1
    • 2.12.5-1
    • 2.12.5-1ubuntu0.1~esm1
    • 2.12.5-1ubuntu0.1~esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • php-twig Ubuntu:Pro:22.04:LTS

    Versions
    • 3.3.2-1ubuntu3
    • 3.3.4-1
    • 3.3.6-1
    • 3.3.7-1
    • 3.3.8-2ubuntu4
    • 3.3.8-2ubuntu4+esm1
    • 3.3.8-2ubuntu4+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • php-twig Ubuntu:Pro:24.04:LTS

    Versions
    • 3.7.0-1
    • 3.7.1-1
    • 3.8.0-2
    • 3.8.0-2ubuntu0.1~esm1
    • 3.8.0-2ubuntu1
    • 3.8.0-2ubuntu1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • php-twig Ubuntu:25.10

    Versions
    • 3.20.0-2ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • php-twig Ubuntu:26.10

    Versions
    • 3.23.0-2build7
    • 3.27.1-1
    • 3.28.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • php-twig Ubuntu:Pro:26.04:LTS

    Versions
    • 3.20.0-2ubuntu1
    • 3.23.0-2build5
    • 3.23.0-2build7
    • 3.23.0-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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