{"id":"CVE-2026-46616","aliases":["EUVD-2026-36069","GHSA-2qjj-h6wp-c7h7"],"status":"published","title":"Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers","description":"Umbraco is an ASP.NET CMS. Prior to versions 13.14.0 and 17.4.0, some of the Surface Controllers in the CMS provide to support member related operations fail to validate redirect URLs, making Razor templates that derive 'RedirectUrl' from user-controlled query parameters vulnerable to malicious redirect attacks. This issue has been patched in versions 13.14.0 and 17.4.0.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0018,"percentile":0.07592,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-601"],"published":"2026-05-21T19:58:06Z","modified":"2026-10-28T02:30:56Z","fixes":[{"ecosystem":"NuGet","package":"Umbraco.Cms","fixed_in":["13.14.0","17.4.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"Umbraco.Cms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"13.14.0"}]}]},{"source":"ghsa","ecosystem":"NuGet","package":"Umbraco.Cms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"17.3.0-rc"},{"fixed":"17.4.0"}]}]},{"source":"osv","ecosystem":"NuGet","package":"Umbraco.Cms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"13.14.0"}]}],"versions":["10.0.0","10.0.0-rc1","10.0.0-rc2","10.0.0-rc3","10.0.0-rc4","10.0.0-rc5","10.0.1","10.1.0","10.1.0-rc","10.1.0-rc2","10.1.1","10.2.0","10.2.0-rc","10.2.1","10.3.0","10.3.0-rc","10.3.1","10.3.2","10.4.0","10.4.0-rc","10.4.1","10.4.2","10.5.0","10.5.0-rc","10.5.1","10.6.0","10.6.0-rc","10.6.1","10.7.0","10.7.0-rc","10.8.0","10.8.0-rc","10.8.1","10.8.10","10.8.11","10.8.2","10.8.3","10.8.4","10.8.5","10.8.6","10.8.7","10.8.8","10.8.9","11.0.0","11.0.0-rc1","11.0.0-rc2","11.0.0-rc3","11.0.0-rc4","11.0.0-rc5","11.0.0-rc6","11.1.0","11.1.0-rc","11.2.0","11.2.0-rc","11.2.1","11.2.2","11.3.0","11.3.0-rc","11.3.1","11.4.0","11.4.0-rc","11.4.1","11.4.2","11.5.0","11.5.0-rc","12.0.0","12.0.0-rc1","12.0.0-rc2","12.0.0-rc3","12.0.0-rc4","12.0.0-rc5","12.0.1","12.1.0","12.1.0-rc","12.1.1","12.1.2","12.2.0","12.2.0-rc","12.3.0","12.3.0-rc","12.3.1","12.3.10","12.3.2","12.3.3","12.3.4","12.3.5","12.3.6","12.3.7","12.3.8","12.3.9","13.0.0","13.0.0-rc1","13.0.0-rc2","13.0.0-rc3","13.0.0-rc4","13.0.0-rc5","13.0.1","13.0.2","13.0.3","13.1.0","13.1.0-rc","13.1.1","13.10.0","13.10.0-rc","13.10.1","13.11.0","13.11.0-rc","13.11.0-rc2","13.12.0","13.12.0-rc","13.12.0-rc2","13.12.1","13.13.0","13.13.0-rc","13.13.0-rc2","13.13.0-rc3","13.13.1","13.14.0-rc","13.14.0-rc2","13.14.0-rc3","13.2.0","13.2.0-rc","13.2.1","13.2.2","13.3.0","13.3.0-rc","13.3.1","13.3.2","13.4.0","13.4.0-rc","13.4.0-rc2","13.4.1","13.5.0","13.5.0-rc","13.5.1","13.5.2","13.5.3","13.6.0","13.6.0-rc","13.6.0-rc2","13.7.0","13.7.0-rc","13.7.1","13.7.2","13.8.0","13.8.0-rc","13.8.1","13.9.0","13.9.0-rc","13.9.1","13.9.2","13.9.3","9.0.0","9.0.0-rc001","9.0.0-rc002","9.0.0-rc003","9.0.0-rc004","9.0.1","9.1.0","9.1.0-rc","9.1.1","9.1.2","9.2.0","9.2.0-rc","9.3.0","9.3.0-rc","9.3.1","9.4.0","9.4.0-rc","9.4.1","9.4.2","9.4.3","9.5.0","9.5.0-rc","9.5.0-rc2","9.5.0-rc3","9.5.1","9.5.2","9.5.3","9.5.4"]},{"source":"osv","ecosystem":"NuGet","package":"Umbraco.Cms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"17.3.0-rc"},{"fixed":"17.4.0"}]}],"versions":["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"]}],"products":[{"vendor":"umbraco","product":"umbraco-cms"},{"vendor":"umbraco","product":"umbraco_cms"}],"references":[{"url":"https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-2qjj-h6wp-c7h7","tags":["x_refsource_CONFIRM","Mitigation","Vendor Advisory","advisory","web"]},{"url":"https://github.com/umbraco/Umbraco-CMS/pull/22561","tags":["x_refsource_MISC","Issue Tracking","Patch","fix","web"]},{"url":"https://github.com/umbraco/Umbraco-CMS/pull/22565","tags":["x_refsource_MISC","Issue Tracking","Patch","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46616","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-2qjj-h6wp-c7h7"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46616.json","tags":["advisory"]},{"url":"https://github.com/umbraco/Umbraco-CMS","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-46616","title":"Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers","description":"Umbraco is an ASP.NET CMS. Prior to versions 13.14.0 and 17.4.0, some of the Surface Controllers in the CMS provide to support member related operations fail to validate redirect URLs, making Razor templates that derive 'RedirectUrl' from user-controlled query parameters vulnerable to malicious redirect attacks. This issue has been patched in versions 13.14.0 and 17.4.0.","status":"published","published":"2026-06-10T15:56:46.003Z","modified":"2026-06-10T19:31:20.183Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T13:46:55.086623Z"}],"euvd":[{"id":"EUVD-2026-36069","description":"Umbraco is an ASP.NET CMS. Prior to versions 13.14.0 and 17.4.0, some of the Surface Controllers in the CMS provide to support member related operations fail to validate redirect URLs, making Razor templates that derive 'RedirectUrl' from user-controlled query parameters vulnerable to malicious redirect attacks. This issue has been patched in versions 13.14.0 and 17.4.0.","status":"published","published":"2026-06-10T15:56:46Z","modified":"2026-06-10T19:31:20Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T18:20:44.937217Z"}],"ghsa":[{"id":"GHSA-2qjj-h6wp-c7h7","title":"Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers","description":"### Impact\nSome of the Surface Controllers in the CMS provide to support member related operations fail to validate redirect URLs, making Razor templates that derive 'RedirectUrl' from user-controlled query parameters vulnerable to malicious redirect attacks.\n\n### Patches\nThe issue is resolved in versions 17.4.0 and 13.14.0.\n\n### Workarounds\nIf users cannot upgrade immediately, they can mitigate the issue in their own site by ensuring every Razor form that posts to `UmbLoginStatusController`, `UmbProfileController` or `UmbRegisterController` passes a concrete, trusted `RedirectUrl` into `Html.BeginUmbracoForm's` route values. \n\nFor example:\n\n```cshtml\n  @using (Html.BeginUmbracoForm\u003cUmbLoginStatusController\u003e(\n      \"HandleLogout\",\n      new { RedirectUrl = Model.Url() }))\n  {\n      \u003cbutton type=\"submit\"\u003eLog out\u003c/button\u003e\n  }\n```\n\n### Resources\n\nhttps://github.com/umbraco/Umbraco-CMS/pull/22565\nhttps://github.com/umbraco/Umbraco-CMS/pull/22561","status":"published","published":"2026-05-21T19:58:06Z","modified":"2026-06-10T18:41:25Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:40:24.856614Z"}],"nvd":[{"id":"CVE-2026-46616","description":"Umbraco is an ASP.NET CMS. Prior to versions 13.14.0 and 17.4.0, some of the Surface Controllers in the CMS provide to support member related operations fail to validate redirect URLs, making Razor templates that derive 'RedirectUrl' from user-controlled query parameters vulnerable to malicious redirect attacks. This issue has been patched in versions 13.14.0 and 17.4.0.","status":"published","published":"2026-06-10T17:16:37.387Z","modified":"2026-10-26T11:10:00.157Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"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"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:12:23.485267Z"}],"osv":[{"id":"CVE-2026-46616","title":"Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers","description":"Umbraco is an ASP.NET CMS. Prior to versions 13.14.0 and 17.4.0, some of the Surface Controllers in the CMS provide to support member related operations fail to validate redirect URLs, making Razor templates that derive 'RedirectUrl' from user-controlled query parameters vulnerable to malicious redirect attacks. This issue has been patched in versions 13.14.0 and 17.4.0.","status":"published","published":"2026-06-10T15:56:46.003Z","modified":"2026-10-28T02:30:56.752616143Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T15:45:06.231145Z"},{"id":"GHSA-2qjj-h6wp-c7h7","title":"Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers","description":"### Impact\nSome of the Surface Controllers in the CMS provide to support member related operations fail to validate redirect URLs, making Razor templates that derive 'RedirectUrl' from user-controlled query parameters vulnerable to malicious redirect attacks.\n\n### Patches\nThe issue is resolved in versions 17.4.0 and 13.14.0.\n\n### Workarounds\nIf users cannot upgrade immediately, they can mitigate the issue in their own site by ensuring every Razor form that posts to `UmbLoginStatusController`, `UmbProfileController` or `UmbRegisterController` passes a concrete, trusted `RedirectUrl` into `Html.BeginUmbracoForm's` route values. \n\nFor example:\n\n```cshtml\n  @using (Html.BeginUmbracoForm\u003cUmbLoginStatusController\u003e(\n      \"HandleLogout\",\n      new { RedirectUrl = Model.Url() }))\n  {\n      \u003cbutton type=\"submit\"\u003eLog out\u003c/button\u003e\n  }\n```\n\n### Resources\n\nhttps://github.com/umbraco/Umbraco-CMS/pull/22565\nhttps://github.com/umbraco/Umbraco-CMS/pull/22561","status":"published","published":"2026-05-21T19:58:06Z","modified":"2026-06-10T18:46:57.007531268Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T15:46:34.700741Z"}]}}