I could also imagine enforcing in the server that whenever a user has an email as the
username, it is always identical to the email address.
However, that change might be problematic considering all the existing data...
Best regards,
Sebastian
Mit freundlichen Grüßen / Best regards
Dr.-Ing. Sebastian Schuster
Engineering and Support (INST/ESY1)
Bosch Software Innovations GmbH | Ullsteinstr. 128 | 12109 Berlin | GERMANY |
www.bosch-si.com
Tel. +49 30 726112-485 | Fax +49 30 726112-100 | Sebastian.Schuster(a)bosch-si.com
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Kallenbach, Michael Hahn
-----Original Message-----
From: keycloak-dev-bounces(a)lists.jboss.org [mailto:keycloak-dev-bounces@lists.jboss.org]
On Behalf Of Stian Thorgersen
Sent: Freitag, 10. November 2017 07:14
To: keycloak-dev <keycloak-dev(a)lists.jboss.org>
Subject: [keycloak-dev] Can't login with email as username if another user has same
email
If user#1 has the username 'user(a)host.com' with no email, and user#2 has the email
'user(a)host.com', user#1 would not be able to login.
In this case user#1 would have to contact the admin who would have to change the username
or add an email.
This issue was reported a while back by our QE [1], but AFAIK no actual users have run
into this problem and it seems unlikely that it'll be a real problem.
I'm leaning towards just closing this issue as won't fix.
Best ideas I have for solving is:
1. Make sure username can't match email of another user. Not sure how we could do this
as I'm pretty sure that couldn't be done with SQL.
2. Add a code check for for the above. It won't be guaranteed, but maybe good enough?
3. Add option to set if realm should allow login by "Username and email",
"Username only" or "Email only". For the "Username and
email" option we should document the fact that this issue can happen and that email
always wins.
[1]
https://issues.jboss.org/browse/KEYCLOAK-4466
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