GHSA-c3jg-qh8m-j3h2: cairosvg (CVE-2026-107378)

Package	Ecosystem	Affected	Fixed in
cairosvg	PyPI	<2.9.1	2.9.1

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

CairoSVG versions before 2.9.1 take far too long to render an SVG containing a single path element with a very large number of segments in its path data. An attacker who can supply an SVG to be rendered, such as through a service that renders user-uploaded images, can cause a denial of service through high CPU use. Upgrade cairosvg to version 2.9.1 or later. The source gives no workaround.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.7	High	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0038, the 32nd percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:08 UTC First seen by agentprime
31 Oct 2026, 14:08 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.