CVE-2025-9670

Name	CVE-2025-9670
Description	A security flaw has been discovered in mixmark-io turndown up to 7.2.1. This affects an unknown function of the file src/commonmark-rules.js. Performing manipulation results in inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been released to the public and may be exploited.
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)
Debian Bugs	1118283

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
node-turndown (PTS)	bookworm, forky, trixie	7.1.1-3	vulnerable
	sid	7.2.2+~2.2.0~git20240406-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
node-turndown	source	(unstable)	7.2.2+~2.2.0~git20240406-1			1118283

Notes

[trixie] - node-turndown <no-dsa> (Minor issue)
[bookworm] - node-turndown <no-dsa> (Minor issue)
https://github.com/mixmark-io/turndown/issues/501
https://github.com/mixmark-io/turndown/pull/504
https://github.com/mixmark-io/turndown/commit/8ed049935ac235cc009e9a7412c0a6fe6ab5b223 (v7.2.2)