CrushFTP 10 before 10.8.3 and 11 before 11.2.3 mishandles password reset, leading to account takeover.

Ruijie Reyee OS versions 2.206.x up to but not including 2.320.x contains a weak mechanism for its users to change their passwords which leaves authentication vulnerable to brute force attacks.

Incorrect username validation in the registration process of CTFd v2.0.0 - v2.2.2 allows an attacker to take over an arbitrary account if the username is known and emails are enabled on the CTFd instance. To exploit the vulnerability, one must register with a username identical to the victim's username, but with white space inserted before and/or after the username. This will register the account with the same username as the victim. After initiating a password reset for the new account, CTFd will reset the victim's account password due to the username collision.