{"id":"CVE-2025-24012","aliases":["EUVD-2025-0204","GHSA-wv8v-rmw2-25wc"],"status":"published","title":"Umbraco Backoffice Components Have XSS/HTML Injection Vulnerability","description":"Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, authenticated users are able to exploit a cross-site scripting vulnerability when viewing certain localized backoffice components. Versions 14.3.2 and 15.1.2 contain a patch.","severity":{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00275,"percentile":0.20036,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2025-01-21T15:32:43Z","modified":"2026-10-28T02:31:00Z","fixes":[{"ecosystem":"NuGet","package":"Umbraco.Cms.StaticAssets","fixed_in":["14.3.2","15.1.2"],"sources":["ghsa","osv"]},{"ecosystem":"npm","package":"@umbraco-cms/backoffice","fixed_in":["14.3.2","15.1.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"Umbraco.Cms.StaticAssets","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14.0.0"},{"fixed":"14.3.2"}]}]},{"source":"ghsa","ecosystem":"NuGet","package":"Umbraco.Cms.StaticAssets","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"15.0.0"},{"fixed":"15.1.2"}]}]},{"source":"ghsa","ecosystem":"npm","package":"@umbraco-cms/backoffice","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14.0.0"},{"fixed":"14.3.2"}]}]},{"source":"ghsa","ecosystem":"npm","package":"@umbraco-cms/backoffice","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"15.0.0"},{"fixed":"15.1.2"}]}]},{"source":"osv","ecosystem":"NuGet","package":"Umbraco.Cms.StaticAssets","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14.0.0"},{"fixed":"14.3.2"}]}],"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"]},{"source":"osv","ecosystem":"NuGet","package":"Umbraco.Cms.StaticAssets","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"15.0.0"},{"fixed":"15.1.2"}]}],"versions":["15.0.0","15.1.0","15.1.0-rc","15.1.0-rc2","15.1.1"]},{"source":"osv","ecosystem":"npm","package":"@umbraco-cms/backoffice","ranges":[{"type":"SEMVER","events":[{"introduced":"14.0.0"},{"fixed":"14.3.2"}]}]},{"source":"osv","ecosystem":"npm","package":"@umbraco-cms/backoffice","ranges":[{"type":"SEMVER","events":[{"introduced":"15.0.0"},{"fixed":"15.1.2"}]}]}],"products":[{"vendor":"umbraco","product":"umbraco-cms"},{"vendor":"umbraco","product":"umbraco_cms"}],"references":[{"url":"https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-wv8v-rmw2-25wc","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory","web"]},{"url":"https://github.com/umbraco/Umbraco-CMS/commit/d4f8754f933895b3a329296e25ddea6f84a0aea2","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-24012","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-wv8v-rmw2-25wc"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24012.json","tags":["advisory"]},{"url":"https://github.com/umbraco/Umbraco-CMS","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-24012","title":"Umbraco Backoffice Components Have XSS/HTML Injection Vulnerability","description":"Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, authenticated users are able to exploit a cross-site scripting vulnerability when viewing certain localized backoffice components. Versions 14.3.2 and 15.1.2 contain a patch.","status":"published","published":"2025-01-21T15:32:43.91Z","modified":"2025-02-12T20:41:21.301Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:32:43.770144Z"}],"euvd":[{"id":"EUVD-2025-0204","description":"Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, authenticated users are able to exploit a cross-site scripting vulnerability when viewing certain localized backoffice components. Versions 14.3.2 and 15.1.2 contain a patch.","status":"published","published":"2025-01-21T15:32:43Z","modified":"2025-02-12T20:41:21Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T00:03:56.514594Z"}],"ghsa":[{"id":"GHSA-wv8v-rmw2-25wc","title":"XSS/HTML Injection Vulnerability in Umbraco Backoffice Components","description":"### Impact\nAuthenticated users are able to exploit an XSS vulnerability when viewing certain localized backoffice components.\n\n### Patches\nWill be patched in 14.3.2 and 15.1.2.\n\nNote:\nThis issue was reported by Pratik Patil from NetSPI @Nexusss-ppatil","status":"published","published":"2025-01-21T19:59:13Z","modified":"2025-01-21T19:59:13Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:38:27.974809Z"}],"nvd":[{"id":"CVE-2025-24012","description":"Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, authenticated users are able to exploit a cross-site scripting vulnerability when viewing certain localized backoffice components. Versions 14.3.2 and 15.1.2 contain a patch.","status":"published","published":"2025-01-21T16:15:14.923Z","modified":"2026-06-17T08:57:53.23Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"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"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:10:49.483601Z"}],"osv":[{"id":"CVE-2025-24012","title":"Umbraco Backoffice Components Have XSS/HTML Injection Vulnerability","description":"Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, authenticated users are able to exploit a cross-site scripting vulnerability when viewing certain localized backoffice components. Versions 14.3.2 and 15.1.2 contain a patch.","status":"published","published":"2025-01-21T15:32:43.91Z","modified":"2026-10-28T02:31:00.954388702Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:44:47.009967Z"},{"id":"GHSA-wv8v-rmw2-25wc","title":"XSS/HTML Injection Vulnerability in Umbraco Backoffice Components","description":"### Impact\nAuthenticated users are able to exploit an XSS vulnerability when viewing certain localized backoffice components.\n\n### Patches\nWill be patched in 14.3.2 and 15.1.2.\n\nNote:\nThis issue was reported by Pratik Patil from NetSPI @Nexusss-ppatil","status":"published","published":"2025-01-21T19:59:13Z","modified":"2025-02-20T23:10:59.910299Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:59.131095Z"}]}}