Geyser is a bridge between Minecraft: Bedrock Edition and Minecraft: Java Edition. Versions of Geyser prior to 1.4.2-SNAPSHOT allow anyone that can connect to the server to forge a LoginPacket with manipulated JWT token allowing impersonation as any user. Version 1.4.2-SNAPSHOT contains a patch for the issue. There are no known workarounds aside from upgrading.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| org.geysermc:connector(Maven) | 0 | 1.4.2-SNAPSHOT | N/A |
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