Username ending with file extension is not allowed
"Username ending with MIME type format is not allowed"
Can be problematic, especially for SSO/OAuth/SAML logins where the username is automatically defined
This issue is reproducible on on-premises and Gitlab.com (ex: with Google Login), either from the login page and/or when attempting to create the user manually from the Admin area.
-mov being a common family name suffix, it could cause a lot of issues in the future
Steps to reproduce
Try to login/create an user in Gitlab (on-premises/Gitlab.com) where the username ends with a MIME type format
What is the current bug behavior?
Username ending with MIME type format is not allowed
What is the expected correct behavior?
Username ending with MIME type format should be allowed to login and/or create account on Gitlab (on-premises/Gitlab.com)