{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "8.9.1"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "ca098e8a0190638712aefa807d6eb862f83aac4d"
            }
          ],
          "repo": "https://github.com/umbraco/umbraco-cms",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "An authenticated path traversal vulnerability exists during package installation in Umbraco CMS \u003c= 8.9.1 or current, which could result in arbitrary files being written outside of the site home and expected paths when installing an Umbraco package.",
  "id": "CVE-2020-5811",
  "modified": "2026-04-01T23:08:40.452956147Z",
  "published": "2020-12-30T16:15:12.447Z",
  "references": [
    {
      "type": "EVIDENCE",
      "url": "http://packetstormsecurity.com/files/163965/Umbraco-CMS-8.9.1-Traversal-Arbitrary-File-Write.html"
    },
    {
      "type": "EVIDENCE",
      "url": "https://www.tenable.com/security/research/tra-2020-59"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}