{"id":"GHSA-7x74-h8cw-qhxq","summary":" Brute force exploit can be used to collect valid usernames","details":"#### Impact\nA brute force exploit that can be used to collect valid usernames is possible.\n\n#### Explanation of the vulnerability \nIt's a brute force exploit that can be used to collect valid usernames by using the “forgot password” function when trying to log into the Backoffice.\nIf the username/email is known, it is easier to find the corresponding password.\nIf an email address that was already used and registered by a user, is provided as an input, the server internal processing time takes longer.\nIf the email address does not exist in the database of the registered users, the server would respond immediately.","aliases":["CVE-2023-49278"],"modified":"2026-09-10T03:50:01.782735694Z","published":"2023-12-13T13:27:06Z","database_specific":{"cwe_ids":["CWE-200"],"severity":"LOW","github_reviewed":true,"github_reviewed_at":"2023-12-13T13:27:06Z","nvd_published_at":"2023-12-12T20:15:08Z"},"references":[{"type":"WEB","url":"https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-7x74-h8cw-qhxq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-49278"},{"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":"8.0.0"},{"fixed":"8.18.10"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/12/GHSA-7x74-h8cw-qhxq/GHSA-7x74-h8cw-qhxq.json"}},{"package":{"name":"Umbraco.CMS","ecosystem":"NuGet","purl":"pkg:nuget/Umbraco.CMS"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.0.0"},{"fixed":"10.8.1"}]}],"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","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"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/12/GHSA-7x74-h8cw-qhxq/GHSA-7x74-h8cw-qhxq.json"}},{"package":{"name":"Umbraco.CMS","ecosystem":"NuGet","purl":"pkg:nuget/Umbraco.CMS"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.0.0"},{"fixed":"12.3.4"}]}],"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","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","12.3.2","12.3.3"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/12/GHSA-7x74-h8cw-qhxq/GHSA-7x74-h8cw-qhxq.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N"}]}