{"id":"CVE-2022-51016","state":"PUBLISHED","title":"PocketMine-MP 3.x before 3.27.0 Authentication Bypass via Login Replay","description":"PocketMine-MP 3.x (before 3.27.0) does not implement Minecraft Bedrock protocol encryption, so the server cannot verify that a connecting client possesses the private key corresponding to its login token. An attacker who captures a valid login from another player's session (for example by tricking the player into connecting to an attacker-controlled server) can replay that login to impersonate the victim and pass XBOX Live authentication until the JWT token expires (typically 2-3 days). This affects servers directly reachable over the internet that are not behind a proxy with encryption enabled. Fixed in 4.0.0 and backported to 3.27.0.","publishedAt":"2026-09-07T12:55:09.180Z","updatedAt":"2026-10-08T15:20:58.430Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["pmmp PocketMine-MP"],"affected":[{"vendor":"pmmp","product":"PocketMine-MP","packageURL":"pkg:composer/pocketmine/pocketmine-mp","defaultStatus":"unaffected","versions":[{"version":"3.0.0","status":"affected","lessThan":"3.27.0","versionType":"semver"},{"version":"3.27.0","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-h79x-98r2-g6qc","https://github.com/pmmp/PocketMine-MP/commit/d28be4eaf24a890f7ef110a51181a3d806a6acca","https://www.vulncheck.com/advisories/pocketmine-mp-before-4.0.0-authentication-bypass-via-login-replay"],"weaknesses":["CWE-294"],"ingestedAt":"2026-10-29T20:05:36.141Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/51xxx/CVE-2022-51016.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-51016","state":"PUBLISHED","datePublished":"2026-09-07T12:55:09.180Z","dateUpdated":"2026-10-08T15:20:58.430Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-09-05T21:03:26.820Z"},"containers":{"cna":{"title":"PocketMine-MP 3.x before 3.27.0 Authentication Bypass via Login Replay","descriptions":[{"lang":"en","value":"PocketMine-MP 3.x (before 3.27.0) does not implement Minecraft Bedrock protocol encryption, so the server cannot verify that a connecting client possesses the private key corresponding to its login token. An attacker who captures a valid login from another player's session (for example by tricking the player into connecting to an attacker-controlled server) can replay that login to impersonate the victim and pass XBOX Live authentication until the JWT token expires (typically 2-3 days). This affects servers directly reachable over the internet that are not behind a proxy with encryption enabled. Fixed in 4.0.0 and backported to 3.27.0."}],"affected":[{"vendor":"pmmp","product":"PocketMine-MP","packageURL":"pkg:composer/pocketmine/pocketmine-mp","defaultStatus":"unaffected","versions":[{"version":"3.0.0","status":"affected","lessThan":"3.27.0","versionType":"semver"},{"version":"3.27.0","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-h79x-98r2-g6qc","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-h79x-98r2-g6qc)"},{"url":"https://github.com/pmmp/PocketMine-MP/commit/d28be4eaf24a890f7ef110a51181a3d806a6acca","tags":["patch"],"name":"Patch Commit"},{"url":"https://www.vulncheck.com/advisories/pocketmine-mp-before-4.0.0-authentication-bypass-via-login-replay","name":"VulnCheck Advisory: PocketMine-MP before 4.0.0 Authentication Bypass via Login Replay","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-294","lang":"en","description":"Authentication Bypass by Capture-replay","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-08T15:20:58.430Z"},"datePublic":"2022-01-21T00:00:00.000Z","x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-10T14:22:36.392090Z","id":"CVE-2022-51016","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":"2026-09-10T15:03:48.963Z"}}]}}}