An issue was discovered in Veal98 Echo Open-Source Community System 2.2 thru 2.3 allowing an unauthenticated attacker to cause the server to send email verification messages to arbitrary users via the /sendEmailCodeForResetPwd endpoint potentially causing a denial of service to the server or the downstream users.
https://github.com/Veal98/Echo
https://gist.github.com/Paxsizy/9d92e8746778cf0926705d89b4f3618c