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CVE-2026-45289 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:9.1 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CNA: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/CloudburstMC/Protocol/security/advisories/GHSA-g2fr-c75x-4hf9	[email protected]	AdvisoryRemedyVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-287	Improper Authentication	[email protected]

Affected Products

Product	Versions
CloudburstMC Protocol	< 3.0.0.Beta12-20260420.182526-15
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: 3.0.0.Beta12-20260420.182526-15moderate effort Workaround:low effort Add further validation for the xid / xname fields for FULL type tokens.

Change History

4 change records found show changes

Date	Action	Recorded By
Jul 22, 2026	CVE Translated	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 2, 2026	New CVE Received	[email protected]