CVE-2026-31899

Name	CVE-2026-31899
Description	CairoSVG is an SVG converter based on Cairo, a 2D graphics library. Prior to Kozea/CairoSVG has exponential denial of service via recursive <use> element amplification in cairosvg/defs.py. This causes CPU exhaustion from a small input.
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	1130748

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
cairosvg (PTS)	bullseye	2.5.0-1.1+deb11u2	vulnerable
	bullseye (security)	2.5.0-1.1+deb11u1	vulnerable
	bookworm	2.5.2-1.1+deb12u1	vulnerable
	trixie	2.7.1-2	vulnerable
	forky, sid	2.8.2-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
cairosvg	source	(unstable)	(unfixed)			1130748

Notes

https://github.com/Kozea/CairoSVG/security/advisories/GHSA-f38f-5xpm-9r7c
Fixed by: https://github.com/Kozea/CairoSVG/commit/6dde8685ed3f19837767bce7a13a5491e3d0e0bf (2.9.0)