CVE-2026-31899CWE-674

CairoSVG vulnerable to Exponential DoS via recursive <use> element amplification

High · published March 13, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
44.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00535 · 44.3th percentile
Weakness
CWE-674 · Uncontrolled Recursion
Published
2026-03-13T19:38Z
EPSS history
Timeline
  • 13 MAR 19:38Z
    CairoSVG vulnerable to Exponential DoS via recursive <use> element amplification
    cvelistv5