CVE-2026-46638

Name	CVE-2026-46638
Description	Twig is a template language for PHP. Prior to 3.26.0, {% sandbox %}{% include %} can include a template that was previously loaded outside the sandbox without re-invoking checkSecurity(), allowing the cached template to use tags, filters, and functions that should have been denied by SecurityPolicy::checkSecurity(). This issue is fixed in version 3.26.0.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-6311-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
php-twig (PTS)	bullseye	2.14.3-1+deb11u2	vulnerable
	bullseye (security)	2.14.3-1+deb11u4	vulnerable
	bookworm, bookworm (security)	3.5.1-1+deb12u3	vulnerable
	trixie (security), trixie	3.27.0-0+deb13u1	fixed
	forky, sid	3.27.1-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
php-twig	source	trixie	3.27.0-0+deb13u1		DSA-6311-1
php-twig	source	(unstable)	3.26.0-1

Notes

[bookworm] - php-twig <ignored> (Minor issue, too intrusive to backport)
https://symfony.com/blog/cve-2026-46638-sandbox-include-skips-checksecurity-on-cached-templates-incomplete-fix-for-cve-2024-45411