CVE-2019-7550

In JForum 2.1.8, an unauthenticated, remote attacker can enumerate whether a user exists by using the "create user" function. If a register/check/username?username= request corresponds to a username that exists, then an "is already in use" error is produced. NOTE: this product is discontinued.

Date published : 2019-02-12

https://www.criticalstart.com/2019/02/information-disclosure-in-jforum-2-1-x-syntax/