An issue was discovered in Epikur before 20.1.1. The Epikur server contains the checkPasswort() function that, upon user login, checks the submitted password against the user password's MD5 hash stored in the database. It is also compared to a second MD5 hash, which is the same for every user (aka a "Backdoor Password" of 3p1kursupport). If the submitted password matches either one, access is granted.

An issue was discovered in Epikur before 20.1.1. It stores the secret passwords of the users as MD5 hashes in the database. MD5 can be brute-forced efficiently and should not be used for such purposes. Additionally, since no salt is used, rainbow tables can speed up the attack.

An issue was discovered in Epikur before 20.1.1. A Glassfish 4.1 server with a default configuration is running on TCP port 4848. No password is required to access it with the administrator account.