CVE-2022-21670

Name	CVE-2022-21670
Description	markdown-it is a Markdown parser. Prior to version 1.3.2, special patterns with length greater than 50 thousand characterss could slow down the parser significantly. Users should upgrade to version 12.3.2 to receive a patch. There are no known workarounds aside from upgrading.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, 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
node-markdown-it (PTS)	bullseye	10.0.0+dfsg-2+deb11u1	fixed
	sid, trixie, bookworm	22.2.3+dfsg+~12.2.3-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
node-markdown-it	source	bullseye	10.0.0+dfsg-2+deb11u1
node-markdown-it	source	(unstable)	10.0.0+dfsg-6

Notes

https://github.com/markdown-it/markdown-it/security/advisories/GHSA-6vfc-qv3f-vr6c
https://github.com/markdown-it/markdown-it/commit/ffc49ab46b5b751cd2be0aabb146f2ef84986101 (12.3.2)