Headline
GHSA-8qp8-9rpw-j46c: SMTP misconfiguration leading to "Forgot Password" exploit that leaks registered user email.
Impact
A user enumeration attack is possible when SMTP is not setup correctly, but reset password is enabled
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Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.8.1, and 12.3.4, a user enumeration attack is possible when SMTP is not set up correctly, but reset password is enabled. Versions 8.18.10, 10.8.1, and 12.3.4 contain a patch for this issue.