{"id":"GHSA-vr9v-27gg-qgx4","summary":"Umbraco.Cms: XSS/HTML Injection in Umbraco Backoffice confirmation dialog","details":"### Impact\nAuthenticated users are able to inject HTML vulnerability into an input field, which is rendered in the confirmation dialog without proper output encoding.\n\n### Patches\nThis issue has been patched in 17.4.0","aliases":["CVE-2026-46609"],"modified":"2026-06-10T18:47:04.285299331Z","published":"2026-05-21T20:43:06Z","database_specific":{"github_reviewed_at":"2026-05-21T20:43:06Z","nvd_published_at":"2026-06-10T17:16:37Z","cwe_ids":["CWE-79"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-vr9v-27gg-qgx4"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46609"},{"type":"PACKAGE","url":"https://github.com/umbraco/Umbraco-CMS"}],"affected":[{"package":{"name":"Umbraco.Cms","ecosystem":"NuGet","purl":"pkg:nuget/Umbraco.Cms"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14.0.0"},{"fixed":"17.4.0"}]}],"versions":["14.0.0","14.1.0","14.1.0-rc","14.1.0-rc2","14.1.1","14.1.2","14.2.0","14.2.0-rc","14.2.0-rc2","14.2.0-rc3","14.3.0","14.3.0-rc","14.3.1","14.3.2","14.3.3","14.3.4","15.0.0","15.0.0-rc1","15.0.0-rc2","15.0.0-rc3","15.0.0-rc4","15.1.0","15.1.0-rc","15.1.0-rc2","15.1.1","15.1.2","15.2.0","15.2.0-rc","15.2.1","15.2.2","15.2.3","15.3.0","15.3.0-rc","15.3.0-rc2","15.3.1","15.4.0","15.4.0-rc","15.4.0-rc2","15.4.1","15.4.2","15.4.3","15.4.4","16.0.0","16.0.0-rc","16.0.0-rc2","16.0.0-rc3","16.0.0-rc4","16.0.0-rc5","16.0.0-rc6","16.1.0","16.1.0-rc","16.1.1","16.2.0","16.2.0-rc","16.2.0-rc2","16.3.0","16.3.0-rc","16.3.0-rc2","16.3.0-rc3","16.3.0-rc4","16.3.1","16.3.2","16.3.3","16.3.4","16.4.0","16.4.0-rc","16.4.0-rc2","16.4.1","16.5.0","16.5.0-rc","16.5.1","17.0.0","17.0.0-beta","17.0.0-rc1","17.0.0-rc2","17.0.0-rc3","17.0.0-rc4","17.0.1","17.0.2","17.1.0","17.1.0-rc","17.2.0","17.2.0-rc","17.2.0-rc2","17.2.1","17.2.2","17.3.0","17.3.0-rc","17.3.0-rc2","17.3.0-rc3","17.3.1","17.3.2","17.3.3","17.3.4","17.3.5","17.4.0-rc","17.4.0-rc2","17.4.0-rc3"],"database_specific":{"last_known_affected_version_range":"\u003c= 17.3.5","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-vr9v-27gg-qgx4/GHSA-vr9v-27gg-qgx4.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N"}]}