{"id":"CVE-2025-24011","aliases":["EUVD-2025-0170","GHSA-hmg4-wwm5-p999"],"status":"published","title":"Umbraco CMS Vulnerable to User Enumeration Feasible Based On Management API Timing and Response Codes","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, it's possible to determine whether an account exists based on an analysis of response codes and timing of Umbraco management API responses. Versions 14.3.2 and 15.1.2 contain a patch. No known workarounds are available.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01609,"percentile":0.76274,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-200","CWE-203"],"published":"2025-01-21T15:27:30Z","modified":"2026-10-28T02:30:50Z","exploits":[{"source":"pocgithub","id":"Puben/CVE-2025-24011-PoC","title":"Puben/CVE-2025-24011-PoC","date":"2025-03-21","url":"https://github.com/Puben/CVE-2025-24011-PoC"}],"fixes":[{"ecosystem":"NuGet","package":"Umbraco.Cms","fixed_in":["14.3.2","15.1.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"Umbraco.Cms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14.0.0"},{"fixed":"14.3.2"}]}]},{"source":"ghsa","ecosystem":"NuGet","package":"Umbraco.Cms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"15.0.0"},{"fixed":"15.1.2"}]}]},{"source":"osv","ecosystem":"NuGet","package":"Umbraco.Cms","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","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"]}],"products":[{"vendor":"umbraco","product":"umbraco-cms"},{"vendor":"umbraco","product":"umbraco_cms"}],"references":[{"url":"https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-hmg4-wwm5-p999","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory","web"]},{"url":"https://github.com/umbraco/Umbraco-CMS/commit/559c6c9f312df1d6eb1bde82c4b81c0896da6382","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://github.com/umbraco/Umbraco-CMS/commit/839b6816f2ae3e5f54459a0f09dad6b17e2d1e07","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-24011","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hmg4-wwm5-p999"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24011.json","tags":["advisory"]},{"url":"https://github.com/umbraco/Umbraco-CMS","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-24011","title":"Umbraco CMS Vulnerable to User Enumeration Feasible Based On Management API Timing and Response Codes","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, it's possible to determine whether an account exists based on an analysis of response codes and timing of Umbraco management API responses. Versions 14.3.2 and 15.1.2 contain a patch. No known workarounds are available.","status":"published","published":"2025-01-21T15:27:30.09Z","modified":"2025-02-12T20:41:21.417Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:32:43.770144Z"}],"euvd":[{"id":"EUVD-2025-0170","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, it's possible to determine whether an account exists based on an analysis of response codes and timing of Umbraco management API responses. Versions 14.3.2 and 15.1.2 contain a patch. No known workarounds are available.","status":"published","published":"2025-01-21T15:27:30Z","modified":"2025-02-12T20:41:21Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T00:03:56.514594Z"}],"ghsa":[{"id":"GHSA-hmg4-wwm5-p999","title":"Umbraco Allows User Enumeration Feasible Based On Management API Timing and Response Codes ","description":"### Impact\n\nBased on an analysis of response codes and timing of Umbraco 14+ management API responses, it's possible to determine whether an account exists.\n\n### Patches\n\nPatched in 14.3.2 and 15.1.2.\n\n### Workarounds\n\nNone available.","status":"published","published":"2025-01-21T21:21:30Z","modified":"2025-04-17T12:43:20Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200","CWE-203"],"updated_at":"2026-11-02T14:38:40.628275Z"}],"nvd":[{"id":"CVE-2025-24011","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, it's possible to determine whether an account exists based on an analysis of response codes and timing of Umbraco management API responses. Versions 14.3.2 and 15.1.2 contain a patch. No known workarounds are available.","status":"published","published":"2025-01-21T16:15:14.76Z","modified":"2026-06-17T08:57:53.12Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-200","CWE-203"],"updated_at":"2026-11-02T14:10:49.483601Z"}],"osv":[{"id":"CVE-2025-24011","title":"Umbraco CMS Vulnerable to User Enumeration Feasible Based On Management API Timing and Response Codes","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, it's possible to determine whether an account exists based on an analysis of response codes and timing of Umbraco management API responses. Versions 14.3.2 and 15.1.2 contain a patch. No known workarounds are available.","status":"published","published":"2025-01-21T15:27:30.09Z","modified":"2026-10-28T02:30:50.184490041Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:44:47.009967Z"},{"id":"GHSA-hmg4-wwm5-p999","title":"Umbraco Allows User Enumeration Feasible Based On Management API Timing and Response Codes ","description":"### Impact\n\nBased on an analysis of response codes and timing of Umbraco 14+ management API responses, it's possible to determine whether an account exists.\n\n### Patches\n\nPatched in 14.3.2 and 15.1.2.\n\n### Workarounds\n\nNone available.","status":"published","published":"2025-01-21T21:21:30Z","modified":"2025-04-17T12:51:08.711721Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200","CWE-203"],"updated_at":"2026-11-02T15:46:49.28217Z"}]}}