If you try to create an account that is similar to an existing one (such as me trying to create "SöWhy"), the software will check for existing usernames (here "SoWhy") and disallow creation of the account. On the other hand, if you create the account "SöWhy" on another project that the "SoWhy"-account does not exist yet, you can then auto-create the account on the wiki the "SoWhy" account already exists, thus creating an impersonation account despite the measures set in place to prevent this.
Example:
- http://toolserver.org/~vvv/sulutil.php?user=SoWhy
- http://toolserver.org/~vvv/sulutil.php?user=S%C3%B6Why
Regards,
SoWhy
Version: unspecified
Severity: enhancement