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Medium · 5.3 CVE-2026-45289 EUVD-2026-34032

CloudburstMC Protocol: Partially missing validation for FULL type authentication tokens

Published Jun 2, 2026 · Updated Jun 3, 2026 · Assigned by GitHub_M

Description

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 depending on the affected versions of Protocol, specifically the EncryptionUtils methods to validate auth payloads for FULL type tokens. This issue has been patched in version 3.0.0.Beta12-20260420.182526-15.

Affected products

VendorProductAffectedFixed
CloudburstMC Protocol < 3.0.0.Beta12-20260420.182526-15 —

References