CVE-2026-45289

CloudburstMC Protocol (Minecraft Bedrock Edition) has a vulnerability in the EncryptionUtils validation for FULL type auth tokens prior to version 3.0.0.Beta12-20260420.182526-15. Exploitation affects software depending on this protocol library by potentially weakening authentication payload vali...

CVE-2026-45289: Improper Authentication

CloudburstMC Protocol is a protocol library for Minecraft Bedrock Edition. Prior to version 3.0.0.Beta12-20260420.182526-15, CloudburstMC Protocol is partially missing validation for FULL type authentication tokens Cloudburst/Protocol. This vulnerability impacts publicly accessible software...

CVE-2026-42188

Geyser is a bridge between Minecraft: Bedrock Edition and Minecraft: Java Edition. Prior to 2.9.3, a server-side request forgery SSRF vulnerability exists in Geyser’s handling of Bedrock player head texture data. By supplying a crafted Base64-encoded skin texture URL via the /give command, an...

WS-2023-0322

The server uses ECDH to calculate a shared secret for the symmetric encryption key used to encrypt network packets after logging in. ECDH requires that the keys used must both belong to the same elliptic curve. In Minecraft: Bedrock Edition, the curve used is "secp384r1". Using any other curve fo...

PT-2023-32987

Name of the Vulnerable Software and Affected Versions Minecraft: Bedrock Edition versions prior to 4.23.1 Minecraft: Bedrock Edition versions prior to 5.3.1 Description The issue arises from the server's use of ECDH to calculate a shared secret for symmetric encryption key used to encrypt network...

CVE-2021-39177

Summary: CVE-2021-39177 affects Geyser versions prior to 1.4.2-SNAPSHOT, where an attacker who can connect to a server can forge a LoginPacket with a manipulated JWT token to impersonate any user. The issue is mitigated by upgrading to 1.4.2-SNAPSHOT or later, which includes a patch. Other workar...

Github Geyser authorization issue vulnerability

Github Geyser is Geyser is the bridge between Minecraft: Bedrock Edition and Minecraft: Java Edition, bridging the gap between those who want to play truly cross-platform. Geyser 1.4.2-SNAPSHOT Previous versions of Geyser 1.4.2-SNAPSHOT had an authorization issue vulnerability that stemmed from...