CVE-2026-45289 PUBLISHED

CloudburstMC Protocol: Partially missing validation for FULL type authentication tokens

Assigner: GitHub_M
Reserved: 11.05.2026 Published: 02.06.2026 Updated: 03.06.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS Score: 5.3

Product Status

Vendor CloudburstMC
Product Protocol
Versions
  • Version < 3.0.0.Beta12-20260420.182526-15 is affected

References

Problem Types

  • CWE-287: Improper Authentication CWE