CVE-2026-46629

Name	CVE-2026-46629
Description	Twig is a template language for PHP. Prior to 3.26.0, twig/intl-extra memoises IntlDateFormatter and NumberFormatter instances in arrays keyed by template-controlled filter arguments such as locale, pattern, and attrs, allowing a template to allocate many ICU formatter objects that remain pinned for the lifetime of the Twig\Environment. 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, DSA-6320-1

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	fixed
	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	Origin
php-twig	source	bookworm	3.5.1-1+deb12u3	DSA-6320-1
php-twig	source	trixie	3.27.0-0+deb13u1	DSA-6311-1
php-twig	source	(unstable)	3.26.0-1

https://symfony.com/blog/cve-2026-46629-unbounded-formatter-memoisation-in-twig-intl-extra-keyed-on-template-controlled-arguments