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CVE-2026-31899

CVE-2026-31899 · CairoSVG vulnerable to Exponential DoS via recursive <use> element amplification

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.5 · High · EPSS 0.5% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • cairosvg

    Versions
    • < 2.9.0: Affected

    No fix published

  • cairosvg Debian:12

    Versions
    • 2.5.2-1.1
    • 2.5.2-1.1+deb12u1
    • 2.7.0-1
    • 2.7.1-1
    • 2.7.1-2
    • 2.8.2-1
    • 2.9.0-1
    • 2.9.0-2
    • 2.9.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cairosvg Debian:13

    Versions
    • 2.7.1-2
    • 2.8.2-1
    • 2.9.0-1
    • 2.9.0-2
    • 2.9.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cairosvg Debian:14

    Versions
    • 2.7.1-2
    • 2.8.2-1
    • 2.9.0-1
    • 2.9.0-2
    • 2.9.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cairosvg PyPI

    Versions
    • 0.1
    • 0.1.1
    • 0.1.2
    • 0.2
    • 0.3
    • 0.3.1
    • 0.4
    • 0.4.1
    • 0.4.2
    • 0.4.3
    • 0.4.4
    • 0.5
    • 1.0
    • 1.0.1
    • 1.0.10
    • 1.0.11
    • 1.0.12
    • 1.0.13
    • 1.0.14
    • 1.0.15
    • 1.0.16
    • 1.0.17
    • 1.0.18
    • 1.0.19
    • 1.0.2
    • 1.0.20
    • 1.0.21
    • 1.0.22
    • 1.0.3
    • 1.0.4
    • 1.0.5
    • 1.0.6
    • 1.0.7
    • 1.0.8
    • 1.0.9
    • 2.0.0
    • 2.0.0rc1
    • 2.0.0rc2
    • 2.0.0rc3
    • 2.0.0rc4
    • 2.0.0rc5
    • 2.0.0rc6
    • 2.0.1
    • 2.0.2
    • 2.0.3
    • 2.1.0
    • 2.1.1
    • 2.1.2
    • 2.1.3
    • 2.2.0
    • 2.2.1
    • 2.3.0
    • 2.3.1
    • 2.4.0
    • 2.4.1
    • 2.4.2
    • 2.5.0
    • 2.5.1
    • 2.5.2
    • 2.6.0
    • 2.7.0
    • 2.7.1
    • 2.8.0
    • 2.8.1
    • 2.8.2
    Affected ranges
    • ECOSYSTEM: < 2.9.0

    Update to 2.9.0

  • cairosvg Ubuntu:16.04:LTS

    Versions
    • 1.0.16-1
    • 1.0.17-1
    • 1.0.19-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cairosvg Ubuntu:18.04:LTS

    Versions
    • 1.0.20-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cairosvg Ubuntu:20.04:LTS

    Versions
    • 2.4.0-2
    • 2.4.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cairosvg Ubuntu:22.04:LTS

    Versions
    • 2.5.0-1.1
    • 2.5.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cairosvg Ubuntu:24.04:LTS

    Versions
    • 2.7.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cairosvg Ubuntu:25.10

    Versions
    • 2.7.1-1
    • 2.7.1-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cairosvg Ubuntu:26.10

    Versions
    • 2.8.2-1
    • 2.9.0-1
    • 2.9.0-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cairosvg Ubuntu:26.04:LTS

    Versions
    • 2.7.1-2
    • 2.8.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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