CB

As reported here:

https://www.joomlapolis.com/forum/153-professional-member-support/232025-potential-bug

and verified locally.

A slash is allowed in usernames: example to/m

This results in a URL for user profile of the form:
http://localhost:8888/JPDEMO/index.php/cb-profile/userprofile/to%2Fm

which leasde to a
Not Found

The requested URL /JPDEMO/index.php/cb-profile/userprofile/to/m was not found on this server.

error