{"id":"CVE-2020-26034","details":"An account-enumeration issue was discovered in Zammad before 3.4.1. The Create User functionality is implemented in a way that would enable an anonymous user to guess valid user email addresses. The application responds differently depending on whether the input supplied was recognized as associated with a valid user.","modified":"2026-03-14T10:23:20.888416Z","published":"2020-12-28T08:15:11.427Z","references":[{"type":"ADVISORY","url":"https://zammad.com/news/security-advisory-zaa-2020-14"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/zammad/zammad","events":[{"introduced":"9bdf6d7b816d4e55501e13d12dc0d9b53cf16f5c"},{"fixed":"a12d45896b1518190fe00a120d6b92f8c29f1f54"}],"database_specific":{"versions":[{"introduced":"1.0.0"},{"fixed":"3.4.1"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26034.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}