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CVE-2026-45289— CloudburstMC Protocol: Partially missing validation for FULL type authentication tokens

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-45289

Vulnerability Information
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Vulnerability Title
CloudburstMC Protocol: Partially missing validation for FULL type authentication tokens
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
认证机制不恰当
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
CloudburstMCProtocol < 3.0.0.Beta12-20260420.182526-15 -

II. Public POCs for CVE-2026-45289

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III. Intelligence Information for CVE-2026-45289

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Vendor Advisories for CVE-2026-45289 (1)

IV. Related Vulnerabilities

Same product: Protocol
Same vendor: CloudburstMC
Same weakness: CWE-287

V. Comments for CVE-2026-45289

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