ubuntu-cve-2026-41066
Vulnerability from osv_ubuntu
Published
2026-04-24 17:16
Modified
2026-05-20 15:27
Summary
Details

lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.0, using either of the two parsers in the default configuration (with resolve_entities=True) allows untrusted XML input to read local files. Setting the resolve_entities option explicitly to resolve_entities='internal' or resolve_entities=False disables the local file access. This vulnerability is fixed in 6.1.0.

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-lxml",
            "binary_version": "3.3.3-1ubuntu0.2+esm5"
          },
          {
            "binary_name": "python3-lxml",
            "binary_version": "3.3.3-1ubuntu0.2+esm5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "lxml",
        "purl": "pkg:deb/ubuntu/lxml@3.3.3-1ubuntu0.2+esm5?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "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",
        "3.3.3-1ubuntu0.2+esm1",
        "3.3.3-1ubuntu0.2+esm2",
        "3.3.3-1ubuntu0.2+esm3",
        "3.3.3-1ubuntu0.2+esm5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-lxml",
            "binary_version": "3.5.0-1ubuntu0.4+esm2"
          },
          {
            "binary_name": "python3-lxml",
            "binary_version": "3.5.0-1ubuntu0.4+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "lxml",
        "purl": "pkg:deb/ubuntu/lxml@3.5.0-1ubuntu0.4+esm2?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.4.4-1",
        "3.5.0-1",
        "3.5.0-1build1",
        "3.5.0-1ubuntu0.1",
        "3.5.0-1ubuntu0.2",
        "3.5.0-1ubuntu0.3",
        "3.5.0-1ubuntu0.4",
        "3.5.0-1ubuntu0.4+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-lxml",
            "binary_version": "4.2.1-1ubuntu0.6"
          },
          {
            "binary_name": "python3-lxml",
            "binary_version": "4.2.1-1ubuntu0.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "lxml",
        "purl": "pkg:deb/ubuntu/lxml@4.2.1-1ubuntu0.6?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.0.0-1",
        "4.1.0-1",
        "4.2.0-1",
        "4.2.1-1",
        "4.2.1-1ubuntu0.1",
        "4.2.1-1ubuntu0.2",
        "4.2.1-1ubuntu0.3",
        "4.2.1-1ubuntu0.4",
        "4.2.1-1ubuntu0.6"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-lxml",
            "binary_version": "4.5.0-1ubuntu0.5"
          },
          {
            "binary_name": "python3-lxml",
            "binary_version": "4.5.0-1ubuntu0.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "lxml",
        "purl": "pkg:deb/ubuntu/lxml@4.5.0-1ubuntu0.5?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4.1-1",
        "4.4.1-1build1",
        "4.4.2-1",
        "4.5.0-1",
        "4.5.0-1ubuntu0.1",
        "4.5.0-1ubuntu0.2",
        "4.5.0-1ubuntu0.3",
        "4.5.0-1ubuntu0.5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-lxml",
            "binary_version": "4.8.0-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "lxml",
        "purl": "pkg:deb/ubuntu/lxml@4.8.0-1build1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.6.3+dfsg-0.1",
        "4.6.4-1",
        "4.6.4-1ubuntu1",
        "4.7.1-1",
        "4.8.0-1",
        "4.8.0-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-lxml",
            "binary_version": "5.2.1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "lxml",
        "purl": "pkg:deb/ubuntu/lxml@5.2.1-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.9.3-1",
        "4.9.3-1build1",
        "4.9.4-1",
        "5.1.0-1",
        "5.1.0-1build1",
        "5.1.0-1build2",
        "5.2.1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-lxml",
            "binary_version": "6.0.1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "lxml",
        "purl": "pkg:deb/ubuntu/lxml@6.0.1-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.3.2-1",
        "5.4.0-1",
        "5.4.0-1build1",
        "6.0.1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-lxml",
            "binary_version": "6.0.2-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "lxml",
        "purl": "pkg:deb/ubuntu/lxml@6.0.2-1build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.0.1-1",
        "6.0.1-1build1",
        "6.0.2-1",
        "6.0.2-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.0, using either of the two parsers in the default configuration (with resolve_entities=True) allows untrusted XML input to read local files. Setting the resolve_entities option explicitly to resolve_entities=\u0027internal\u0027 or resolve_entities=False disables the local file access. This vulnerability is fixed in 6.1.0.",
  "id": "UBUNTU-CVE-2026-41066",
  "modified": "2026-05-20T15:27:26Z",
  "published": "2026-04-24T17:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-41066"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-41066"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/lxml/lxml/security/advisories/GHSA-vfmq-68hx-4jfw"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.launchpad.net/lxml/+bug/2146291"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-41066"
  ]
}



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