ubuntu-cve-2026-31899
Vulnerability from osv_ubuntu
Published
2026-03-13 19:54
Modified
2026-05-20 15:27
Summary
Details

CairoSVG is an SVG converter based on Cairo, a 2D graphics library. Prior to Kozea/CairoSVG has exponential denial of service via recursive element amplification in cairosvg/defs.py. This causes CPU exhaustion from a small input.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-cairosvg",
            "binary_version": "1.0.19-1"
          },
          {
            "binary_name": "python3-cairosvg",
            "binary_version": "1.0.19-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "cairosvg",
        "purl": "pkg:deb/ubuntu/cairosvg@1.0.19-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.16-1",
        "1.0.17-1",
        "1.0.19-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-cairosvg",
            "binary_version": "1.0.20-1"
          },
          {
            "binary_name": "python3-cairosvg",
            "binary_version": "1.0.20-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "cairosvg",
        "purl": "pkg:deb/ubuntu/cairosvg@1.0.20-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.20-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cairosvg",
            "binary_version": "2.4.2-1"
          },
          {
            "binary_name": "python3-cairosvg",
            "binary_version": "2.4.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "cairosvg",
        "purl": "pkg:deb/ubuntu/cairosvg@2.4.2-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.0-2",
        "2.4.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cairosvg",
            "binary_version": "2.5.2-1"
          },
          {
            "binary_name": "python3-cairosvg",
            "binary_version": "2.5.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "cairosvg",
        "purl": "pkg:deb/ubuntu/cairosvg@2.5.2-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.5.0-1.1",
        "2.5.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cairosvg",
            "binary_version": "2.7.1-1"
          },
          {
            "binary_name": "python3-cairosvg",
            "binary_version": "2.7.1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "cairosvg",
        "purl": "pkg:deb/ubuntu/cairosvg@2.7.1-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.7.1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cairosvg",
            "binary_version": "2.7.1-2"
          },
          {
            "binary_name": "python3-cairosvg",
            "binary_version": "2.7.1-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "cairosvg",
        "purl": "pkg:deb/ubuntu/cairosvg@2.7.1-2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.7.1-1",
        "2.7.1-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cairosvg",
            "binary_version": "2.8.2-1"
          },
          {
            "binary_name": "python3-cairosvg",
            "binary_version": "2.8.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "cairosvg",
        "purl": "pkg:deb/ubuntu/cairosvg@2.8.2-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.7.1-2",
        "2.8.2-1"
      ]
    }
  ],
  "aliases": [],
  "details": "CairoSVG is an SVG converter based on Cairo, a 2D graphics library. Prior to Kozea/CairoSVG has exponential denial of service via recursive \u003cuse\u003e element amplification in cairosvg/defs.py. This causes CPU exhaustion from a small input.",
  "id": "UBUNTU-CVE-2026-31899",
  "modified": "2026-05-20T15:27:20Z",
  "published": "2026-03-13T19:54:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-31899"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31899"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Kozea/CairoSVG/security/advisories/GHSA-f38f-5xpm-9r7c"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Kozea/CairoSVG/commit/6dde8685ed3f19837767bce7a13a5491e3d0e0bf"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-31899"
  ]
}



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