CVE-2026-46636
Twig: Sandbox method allowlist bypass via `Markup` subclass
Description
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.
No summary for this CVE yet.
Weaknesses
Affected Products
twigphp
oss-projectaka twig
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
References
https://github.com/twigphp/Twig/security/advisories/GHSA-64jr-qjx4-w2fh
github.com
https://security-tracker.debian.org/tracker/CVE-2026-46636
security-tracker.debian.org
https://security-tracker.debian.org/tracker/DSA-6311-1
security-tracker.debian.org
and 2 more references View all →
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