{"id":"CVE-2026-45289","state":"PUBLISHED","title":"CloudburstMC Protocol: Partially missing validation for FULL type authentication tokens","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.","publishedAt":"2026-06-02T20:36:02.436Z","updatedAt":"2026-06-03T13:34:19.045Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["CloudburstMC Protocol"],"affected":[{"vendor":"CloudburstMC","product":"Protocol","versions":[{"version":"< 3.0.0.Beta12-20260420.182526-15","status":"affected"}]}],"references":["https://github.com/CloudburstMC/Protocol/security/advisories/GHSA-g2fr-c75x-4hf9"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45289.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45289","state":"PUBLISHED","datePublished":"2026-06-02T20:36:02.436Z","dateUpdated":"2026-06-03T13:34:19.045Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-11T20:14:43.201Z"},"containers":{"cna":{"title":"CloudburstMC Protocol: Partially missing validation for FULL type authentication tokens","descriptions":[{"lang":"en","value":"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":[{"vendor":"CloudburstMC","product":"Protocol","versions":[{"version":"< 3.0.0.Beta12-20260420.182526-15","status":"affected"}]}],"references":[{"url":"https://github.com/CloudburstMC/Protocol/security/advisories/GHSA-g2fr-c75x-4hf9","name":"https://github.com/CloudburstMC/Protocol/security/advisories/GHSA-g2fr-c75x-4hf9","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-02T20:36:02.436Z"},"source":{"advisory":"GHSA-g2fr-c75x-4hf9","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-03T13:34:10.628391Z","id":"CVE-2026-45289","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-03T13:34:19.045Z"}}]}}}