vuln-ubuntu/data/osv/usn/USN-4666-1.json

{
  "schema_version": "1.7.0",
  "id": "USN-4666-1",
  "summary": "lxml vulnerability",
  "details": "It was discovered that lxml incorrectly handled certain HTML.\nAn attacker could possibly use this issue to cross-site scripting (XSS) attacks.\n",
  "aliases": [],
  "upstream": [
    "UBUNTU-CVE-2020-27783"
  ],
  "related": [],
  "published": "2020-12-09T13:28:51Z",
  "modified": "2026-06-29T10:52:48Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "lxml",
        "purl": "pkg:deb/ubuntu/lxml@3.3.3-1ubuntu0.2+esm1?arch=source&distro=trusty/esm"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.3.3-1ubuntu0.2+esm1"
            }
          ]
        }
      ],
      "versions": [
        "3.2.0-1",
        "3.3.0~beta2-1",
        "3.3.0~beta4-1",
        "3.3.1-1",
        "3.3.2-1",
        "3.3.2-1build1",
        "3.3.3-1",
        "3.3.3-1ubuntu0.1",
        "3.3.3-1ubuntu0.2"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-lxml",
            "binary_version": "3.3.3-1ubuntu0.2+esm1"
          },
          {
            "binary_name": "python3-lxml",
            "binary_version": "3.3.3-1ubuntu0.2+esm1"
          }
        ],
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:Pro:14.04:LTS",
          "cves": []
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "lxml",
        "purl": "pkg:deb/ubuntu/lxml@3.5.0-1ubuntu0.2?arch=source&distro=xenial"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.0-1ubuntu0.2"
            }
          ]
        }
      ],
      "versions": [
        "3.4.4-1",
        "3.5.0-1",
        "3.5.0-1build1",
        "3.5.0-1ubuntu0.1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-lxml",
            "binary_version": "3.5.0-1ubuntu0.2"
          },
          {
            "binary_name": "python3-lxml",
            "binary_version": "3.5.0-1ubuntu0.2"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:16.04:LTS",
          "cves": []
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "lxml",
        "purl": "pkg:deb/ubuntu/lxml@4.2.1-1ubuntu0.2?arch=source&distro=bionic"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.2.1-1ubuntu0.2"
            }
          ]
        }
      ],
      "versions": [
        "4.0.0-1",
        "4.1.0-1",
        "4.2.0-1",
        "4.2.1-1",
        "4.2.1-1ubuntu0.1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-lxml",
            "binary_version": "4.2.1-1ubuntu0.2"
          },
          {
            "binary_name": "python3-lxml",
            "binary_version": "4.2.1-1ubuntu0.2"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:18.04:LTS",
          "cves": []
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "lxml",
        "purl": "pkg:deb/ubuntu/lxml@4.5.0-1ubuntu0.1?arch=source&distro=focal"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.5.0-1ubuntu0.1"
            }
          ]
        }
      ],
      "versions": [
        "4.4.1-1",
        "4.4.1-1build1",
        "4.4.2-1",
        "4.5.0-1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-lxml",
            "binary_version": "4.5.0-1ubuntu0.1"
          },
          {
            "binary_name": "python3-lxml",
            "binary_version": "4.5.0-1ubuntu0.1"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:20.04:LTS",
          "cves": []
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4666-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27783"
    }
  ]
}