CVE-2026-49981

Name	CVE-2026-49981
Description	Twig is a template language for PHP. Prior to 3.27.0, the per-template filter, tag, and function allow-list verdict is computed when a Template instance is constructed and can remain cached after sandbox state changes between renders, allowing a later sandboxed render to reuse a template that was originally checked with a different or empty policy. This issue is fixed in version 3.27.0.
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)

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
php-twig	source	(unstable)	3.27.0-1

Notes

[bookworm] - php-twig <ignored> (Minor issue, too intrusive to backport)
https://github.com/twigphp/Twig/security/advisories/GHSA-529h-vh3j-85hq
https://github.com/twigphp/Twig/commit/23eb6eb1267cb0d303b91eb5cff9b0c559c538a4 (v3.27.0)
Duplicate of CVE-2026-46636