Vulnerability-Lookup

CVE-2026-45289 (GCVE-0-2026-45289)

Vulnerability from cvelistv5 – Published: 2026-06-02 20:36 – Updated: 2026-06-03 13:34

Title

CloudburstMC Protocol: Partially missing validation for FULL type authentication tokens

Summary

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.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-03 13:34 UTC

CWE

CWE-287 - Improper Authentication

Assigner

GitHub_M

References

1 reference

URL	Tags
https://github.com/CloudburstMC/Protocol/security…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
CloudburstMC	Protocol	Affected: < 3.0.0.Beta12-20260420.182526-15

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-45289

Vulnerability from fkie_nvd - Published: 2026-06-02 21:16 - Updated: 2026-07-22 19:10

Severity

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/CloudburstMC/Protocol/security/advisories/GHSA-g2fr-c75x-4hf9

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Protocol",
          "vendor": "CloudburstMC",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.0.0.Beta12-20260420.182526-15"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
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    },
    {
      "lang": "es",
      "value": "CloudburstMC Protocol es una biblioteca de protocolo para Minecraft Bedrock Edition. Antes de la versi\u00f3n 3.0.0.Beta12-20260420.182526-15, CloudburstMC Protocol carece parcialmente de validaci\u00f3n para tokens de autenticaci\u00f3n de tipo FULL (Cloudburst/Protocol). Esta vulnerabilidad impacta al software de acceso p\u00fablico que depende de las versiones afectadas de Protocol, espec\u00edficamente los m\u00e9todos EncryptionUtils para validar las cargas \u00fatiles de autenticaci\u00f3n para tokens de tipo FULL. Este problema ha sido parcheado en la versi\u00f3n 3.0.0.Beta12-20260420.182526-15."
    }
  ],
  "id": "CVE-2026-45289",
  "lastModified": "2026-07-22T19:10:00.120",
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          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
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          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-45289 (GCVE-0-2026-45289)

FKIE_CVE-2026-45289

Tags

Sightings

Nomenclature