{"id":"CVE-2020-5810","aliases":["EUVD-2020-26966","GHSA-qv67-8hwr-88xh"],"status":"published","title":"A stored XSS vulnerability exists in Umbraco CMS \u003c= 8.9.1 or current. An authenticated user...","description":"A stored XSS vulnerability exists in Umbraco CMS \u003c= 8.9.1 or current. An authenticated user authorized to upload media can upload a malicious .svg file which act as a stored XSS payload.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.61954,"percentile":0.99182,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2020-12-30T15:18:02Z","modified":"2026-10-24T10:31:03Z","products":[{"vendor":"umbraco","product":"umbraco cms"},{"vendor":"umbraco","product":"umbraco_cms"}],"references":[{"url":"https://www.tenable.com/security/research/tra-2020-59","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5810"},{"url":"https://github.com/advisories/GHSA-qv67-8hwr-88xh"}],"sources":{"cve":[{"id":"CVE-2020-5810","description":"A stored XSS vulnerability exists in Umbraco CMS \u003c= 8.9.1 or current. An authenticated user authorized to upload media can upload a malicious .svg file which act as a stored XSS payload.","status":"published","published":"2020-12-30T15:18:02Z","modified":"2024-08-04T08:39:25.775Z","updated_at":"2026-11-02T14:35:47.56691Z"}],"euvd":[{"id":"EUVD-2020-26966","description":"A stored XSS vulnerability exists in Umbraco CMS \u003c= 8.9.1 or current. An authenticated user authorized to upload media can upload a malicious .svg file which act as a stored XSS payload.","status":"published","published":"2020-12-30T15:18:02Z","modified":"2024-08-04T08:39:25Z","updated_at":"2026-11-03T03:08:05.705852Z"}],"ghsa":[{"id":"GHSA-qv67-8hwr-88xh","title":"A stored XSS vulnerability exists in Umbraco CMS \u003c= 8.9.1 or current. An authenticated user...","description":"A stored XSS vulnerability exists in Umbraco CMS \u003c= 8.9.1 or current. An authenticated user authorized to upload media can upload a malicious .svg file which act as a stored XSS payload.","status":"published","published":"2022-05-24T17:37:52Z","modified":"2023-01-29T05:05:13Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:45:44.421144Z"}],"nvd":[{"id":"CVE-2020-5810","description":"A stored XSS vulnerability exists in Umbraco CMS \u003c= 8.9.1 or current. An authenticated user authorized to upload media can upload a malicious .svg file which act as a stored XSS payload.","status":"published","published":"2020-12-30T16:15:12.4Z","modified":"2026-06-17T03:22:16.693Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:28.340168Z"}],"osv":[{"id":"CVE-2020-5810","description":"A stored XSS vulnerability exists in Umbraco CMS \u003c= 8.9.1 or current. An authenticated user authorized to upload media can upload a malicious .svg file which act as a stored XSS payload.","status":"published","published":"2020-12-30T16:15:12.4Z","modified":"2026-10-24T10:31:03.91448834Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:16.936975Z"}]}}