In any realm set with "User (Self) registration" a user that is registered with a username in email format can be "locked out" (denied from logging in) using his username.
{ "nvd_published_at": null, "cwe_ids": [ "CWE-640" ], "severity": "LOW", "github_reviewed": true, "github_reviewed_at": "2024-06-12T19:42:21Z" }