Security advisory

{
  "id": "c7c4358fce272fe3957a3fdcf319b51be510bbb2b18c7dbb948f6ba9146ea7b5",
  "url": "https://osv.dev/vulnerability/CVE-2016-5851",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2016-5851",
    "summary": "python-docx before 0.8.6 allows context-dependent attackers to conduct XML External Entity (XXE) attacks via a crafted document.",
    "evidence": "osv:CVE-2016-5851",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2016-5851",
      "aliases": [
        "CVE-2016-5851",
        "GHSA-34wj-p5jm-2p96",
        "PYSEC-2016-21"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/python-openxml/python-docx",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "bc34ec95a9e7bdff01f5b43b1070bbc0c018ab25"
                },
                {
                  "fixed": "61b40b161b64173ab8e362aec1fd197948431beb"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:python-openxml_project:python-docx:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.8.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "61b40b161b64173ab8e362aec1fd197948431beb"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.8.5",
            "v0.8.4",
            "v0.8.3",
            "v0.8.2",
            "v0.8.1",
            "v0.8.0",
            "v0.7.6",
            "v0.7.5",
            "v0.7.4",
            "v0.7.3",
            "v0.7.2",
            "v0.7.1",
            "v0.7.0",
            "v0.6.0",
            "v0.5.3",
            "v0.5.2",
            "v0.5.0",
            "v0.4.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-5851.json"
          }
        }
      ],
      "modified": "2026-10-20T10:47:29.914617308Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FFMOH7ZPOPQWNJGUZOS5LXX4MGNRXXT/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XU2WSYRNB7CLBBFCGSX34XHACTA2SWDZ/",
        "https://github.com/python-openxml/python-docx/blob/v0.8.6/HISTORY.rst",
        "https://github.com/python-openxml/python-docx/commit/61b40b161b64173ab8e362aec1fd197948431beb"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2016-5851",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 379436,
  "published_at": "2016-12-21T22:59:00.17+00:00"
}