For high-ranking staff members, passwords are no longer enough. Implement a secondary authentication plugin that supports Time-based One-Time Passwords (TOTP) via apps like Google Authenticator or Discord verification. Even if an attacker bypasses the AuthMe password prompt, they will remain locked out without the secondary 2FA token. Conclusion
Use a local firewall (like Linux UFW) to block all public traffic to the backend server ports (e.g., 25566, 25567). Only allow connections from the IP address of your proxy. Keep AuthMe Updated Minecraft Authme Bypass
If a server changes its online-mode settings or alters how UUIDs are generated mid-lifecycle, the internal database can become desynchronized. Attackers can leverage specific custom clients to spoof matching offline UUIDs, tricking AuthMe into recognizing them as already authenticated or bypassing the registration check. 4. Direct Database Exploitation For high-ranking staff members, passwords are no longer
Premium players can use /premium to enable this feature for their account. Conclusion Use a local firewall (like Linux UFW)
If a backend server (e.g., Survival or Creative) has bungeecord: true in spigot.yml but the firewall is not properly configured, players can bypass the proxy entirely.
If you are a server owner, this is not a vulnerability; it is a feature designed to enhance the experience for premium users on an offline server. How it works:
A common "bypass" is not a vulnerability in AuthMe itself, but a flaw in how it was installed.