{"id":"CVE-2021-34254","aliases":["EUVD-2021-20916","GHSA-862x-hrm8-ch77"],"status":"published","title":"Umbraco CMS before 7.15.7 is vulnerable to Open Redirection due to insufficient url sanitization...","description":"Umbraco CMS before 7.15.7 is vulnerable to Open Redirection due to insufficient url sanitization on booting.aspx.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.0071,"percentile":0.53952,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-601"],"published":"2021-06-28T15:24:35Z","modified":"2026-10-20T10:54:45Z","products":[{"vendor":"umbraco","product":"umbraco_cms"}],"references":[{"url":"https://github.com/umbraco/Umbraco-CMS/issues/9782","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34254"},{"url":"https://github.com/advisories/GHSA-862x-hrm8-ch77"}],"sources":{"cve":[{"id":"CVE-2021-34254","description":"Umbraco CMS before 7.15.7 is vulnerable to Open Redirection due to insufficient url sanitization on booting.aspx.","status":"published","published":"2021-06-28T15:24:35Z","modified":"2024-08-04T00:05:52.519Z","updated_at":"2026-11-02T14:33:11.244759Z"}],"euvd":[{"id":"EUVD-2021-20916","description":"Umbraco CMS before 7.15.7 is vulnerable to Open Redirection due to insufficient url sanitization on booting.aspx.","status":"published","published":"2021-06-28T15:24:35Z","modified":"2024-08-04T00:05:52Z","updated_at":"2026-11-03T03:24:32.880562Z"}],"ghsa":[{"id":"GHSA-862x-hrm8-ch77","title":"Umbraco CMS before 7.15.7 is vulnerable to Open Redirection due to insufficient url sanitization...","description":"Umbraco CMS before 7.15.7 is vulnerable to Open Redirection due to insufficient url sanitization on booting.aspx.","status":"published","published":"2022-05-24T19:06:22Z","modified":"2023-01-30T05:00:33Z","cwes":["CWE-601"],"updated_at":"2026-11-02T14:46:13.539888Z"}],"nvd":[{"id":"CVE-2021-34254","description":"Umbraco CMS before 7.15.7 is vulnerable to Open Redirection due to insufficient url sanitization on booting.aspx.","status":"published","published":"2021-06-28T16:15:08.743Z","modified":"2026-06-17T03:55:34.797Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:06:55.259633Z"}],"osv":[{"id":"CVE-2021-34254","description":"Umbraco CMS before 7.15.7 is vulnerable to Open Redirection due to insufficient url sanitization on booting.aspx.","status":"published","published":"2021-06-28T16:15:08.743Z","modified":"2026-10-20T10:54:45.004192845Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:20.13324Z"}]}}