{"id":"CVE-2023-38694","aliases":["EUVD-2023-3328","GHSA-xxc6-35r7-796w"],"status":"published","title":"Umbraco CMS vulnerable to possible injection of HTML in an unintended form","description":"Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.7.0, and 12.1.0, a user with access to a specific part of the backoffice is able to inject HTML code into a form where it is not intended. Versions 8.18.10, 10.7.0, and 12.1.0 contain a patch for this issue.","severity":{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00411,"percentile":0.35782,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2023-12-12T17:09:08Z","modified":"2026-10-28T02:30:21Z","fixes":[{"ecosystem":"NuGet","package":"Umbraco.CMS","fixed_in":["8.18.10","10.7.0","12.1.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"Umbraco.CMS","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.0"},{"fixed":"8.18.10"}]}]},{"source":"ghsa","ecosystem":"NuGet","package":"Umbraco.CMS","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.0.0"},{"fixed":"10.7.0"}]}]},{"source":"ghsa","ecosystem":"NuGet","package":"Umbraco.CMS","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.0.0"},{"fixed":"12.1.0"}]}]},{"source":"osv","ecosystem":"NuGet","package":"Umbraco.CMS","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.0"},{"fixed":"8.18.10"}]}]},{"source":"osv","ecosystem":"NuGet","package":"Umbraco.CMS","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.0.0"},{"fixed":"10.7.0"}]}],"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-rc","9.0.0","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":"11.0.0"},{"fixed":"12.1.0"}]}],"versions":["11.0.0","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-rc"]}],"products":[{"vendor":"umbraco","product":"umbraco-cms"},{"vendor":"umbraco","product":"umbraco_cms"}],"references":[{"url":"https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-xxc6-35r7-796w","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-38694","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-xxc6-35r7-796w"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/38xxx/CVE-2023-38694.json","tags":["advisory"]},{"url":"https://github.com/umbraco/Umbraco-CMS","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-38694","title":"Umbraco CMS vulnerable to possible injection of HTML in an unintended form","description":"Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.7.0, and 12.1.0, a user with access to a specific part of the backoffice is able to inject HTML code into a form where it is not intended. Versions 8.18.10, 10.7.0, and 12.1.0 contain a patch for this issue.","status":"published","published":"2023-12-12T17:09:08.237Z","modified":"2024-08-02T17:46:56.603Z","cvss":[{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:35:29.772612Z"}],"euvd":[{"id":"EUVD-2023-3328","description":"Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.7.0, and 12.1.0, a user with access to a specific part of the backoffice is able to inject HTML code into a form where it is not intended. Versions 8.18.10, 10.7.0, and 12.1.0 contain a patch for this issue.","status":"published","published":"2023-12-12T17:09:08Z","modified":"2024-08-02T17:46:56Z","cvss":[{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N","level":"low"}],"updated_at":"2026-11-03T03:50:02.733403Z"}],"ghsa":[{"id":"GHSA-xxc6-35r7-796w","title":"Possible injection of HTML into user invite mails","description":"#### Impact\nA user with access to a specific part of the backoffice is able to inject HTML code into a form where it is not intended.\n\n#### Explanation of the vulnerability \nA person with access to the backoffice and the \"users\" section could send a user invite and inject HTML code into the invite message.","status":"published","published":"2023-12-13T13:17:37Z","modified":"2024-01-12T16:27:30Z","cvss":[{"version":"3.1","score":0,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:N","level":"none"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:37:30.812736Z"}],"nvd":[{"id":"CVE-2023-38694","description":"Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.7.0, and 12.1.0, a user with access to a specific part of the backoffice is able to inject HTML code into a form where it is not intended. Versions 8.18.10, 10.7.0, and 12.1.0 contain a patch for this issue.","status":"published","published":"2023-12-12T17:15:07.917Z","modified":"2026-06-17T06:10:58.18Z","cvss":[{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N","level":"low","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":"2026-11-02T14:08:54.010507Z"}],"osv":[{"id":"CVE-2023-38694","title":"Umbraco CMS vulnerable to possible injection of HTML in an unintended form","description":"Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.7.0, and 12.1.0, a user with access to a specific part of the backoffice is able to inject HTML code into a form where it is not intended. Versions 8.18.10, 10.7.0, and 12.1.0 contain a patch for this issue.","status":"published","published":"2023-12-12T17:09:08.237Z","modified":"2026-10-28T02:30:21.620234967Z","cvss":[{"version":"3.1","score":3.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:44:32.922049Z"},{"id":"GHSA-xxc6-35r7-796w","title":"Possible injection of HTML into user invite mails","description":"#### Impact\nA user with access to a specific part of the backoffice is able to inject HTML code into a form where it is not intended.\n\n#### Explanation of the vulnerability \nA person with access to the backoffice and the \"users\" section could send a user invite and inject HTML code into the invite message.","status":"published","published":"2023-12-13T13:17:37Z","modified":"2024-02-16T08:11:04.367728Z","cvss":[{"version":"3.1","score":0,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:N","level":"none"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:47:00.604718Z"}]}}