{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:umbraco:umbraco_cms:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "7.15.7"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7447cc4b7eb2c66f2ba4ecba02d0dbdfbbab2d4f"
            }
          ],
          "repo": "https://github.com/umbraco/umbraco-cms",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {},
  "details": "Umbraco CMS before 7.15.7 is vulnerable to Open Redirection due to insufficient url sanitization on booting.aspx.",
  "id": "CVE-2021-34254",
  "modified": "2026-07-08T05:39:31.581884838Z",
  "published": "2021-06-28T16:15:08.743Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://github.com/umbraco/Umbraco-CMS/issues/9782"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}