CVE-2026-46627

Name	CVE-2026-46627
Description	Twig is a template language for PHP. Prior to 3.26.0, the Twig sandbox does not prevent a template from consuming CPU, memory, or wall-clock time, even under the strictest allow-list, allowing untrusted templates to cause resource exhaustion. This issue is addressed in version 3.26.0 by documenting that the sandbox does not protect against resource exhaustion.
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, trixie (security)	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	unimportant

https://symfony.com/blog/cve-2026-46627-sandbox-does-not-protect-against-resource-exhaustion
Upstream change only clarifies the documentation