: AuthMe includes specific permission nodes for administrators, such as authme.bypassforcesurvival and authme.bypassantibot . If an administrator accidentally grants these wildcard permissions ( * ) to default players, those players can walk right through the protection mechanisms.
Malicious clients might attempt to send CHAT or INTERACT packets before the LOGIN packet was finalized.
This article is intended for educational and ethical security research purposes. Unauthorized access to computer systems is illegal. Server administrators are responsible for ensuring their security measures comply with local laws and platform terms of service.
To help secure your server against these vulnerabilities, let me know: Minecraft Authme Bypass
Vulnerabilities in older versions of these integration plugins have historically allowed attackers to trick the server into believing a cracked client is a premium client. The server then skips the AuthMe password check, granting the attacker instant access to the targeted account. 3. Username Trickery and Unicode Exploits
If you need help securing your specific server setup, let me know:
Never give authme.admin.* to any group below Owner . Use a separate permission for unregister: This article is intended for educational and ethical
Forgetting to protect specific chat commands or failing to enable forcesession settings.
This article explores the common vulnerabilities and attack vectors associated with AuthMe, provides signs to detect a breach, and offers an actionable guide to securing your server.
: Occasionally, specific vulnerabilities in AuthMe are documented as official CVEs (Common Vulnerabilities and Exposures), which provide a professional-grade breakdown of the "bypass" logic. To help secure your server against these vulnerabilities,
Modern versions of AuthMeReloaded have largely patched these vulnerabilities by strict packet filtering, ensuring no interaction is permitted until authentication is complete. 2. Session Hijacking/Token Stealing
In your sub-servers' bukkit.yml , set this value to -1 if using BungeeCord. 2. Keep AuthMe and Dependencies Updated