CVE-2026-46636
Fixed in a distro release EPSS <1%CVSS 8.7
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.
Products: twigphp Twig
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | php-twig | no fix |
| Debian 13 | php-twig | 3.27.0-0+deb13u1 |
| Debian 14 | php-twig | 3.27.0-1 |
| Ubuntu 25.10 | php-twig | no fix |
| Ubuntu 26.10 | php-twig | no fix |
| Ubuntu Pro 20.04 LTS | php-twig | no fix |
| Ubuntu Pro 22.04 LTS | php-twig | no fix |
| Ubuntu Pro 24.04 LTS | php-twig | no fix |
| Ubuntu Pro 26.04 LTS | php-twig | no fix |