PocketMine-MP 3.x before 3.27.0 Authentication Bypass via Login Replay
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2022-51016
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 19:59 UTC · Revision 1
Source evidence
PocketMine-MP 3.x before 3.27.0 Authentication Bypass via Login Replay
core-osv · Original sourcePublished 7 Sept 2026, 12:55 UTC
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.
osv:CVE-2022-51016
Complete source record
{
"id": "e6a3f5d0513768ffe5b04aec75e28393dd0c57d29336a17d47513028bf877649",
"url": "https://osv.dev/vulnerability/CVE-2022-51016",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "PocketMine-MP 3.x before 3.27.0 Authentication Bypass via Login Replay",
"summary": "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.",
"evidence": "osv:CVE-2022-51016",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2022-51016",
"aliases": [
"CVE-2022-51016",
"GHSA-h79x-98r2-g6qc"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "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"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/pmmp/pocketmine-mp",
"type": "GIT",
"events": [
{
"introduced": "03510333dcec34fa5a59191e8e9610a9da5765ef"
},
{
"fixed": "e21446e5832060066099d93f9822f2ecfe8d59ad"
},
{
"fixed": "d28be4eaf24a890f7ef110a51181a3d806a6acca"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.27.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "d28be4eaf24a890f7ef110a51181a3d806a6acca"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"3.26.5",
"3.26.4",
"3.26.3",
"3.26.2",
"3.26.1",
"3.26.0",
"3.25.6",
"3.25.5",
"3.25.4",
"3.25.3",
"3.25.2",
"3.25.1",
"3.25.0",
"3.24.0",
"3.23.1",
"3.23.0",
"3.22.5",
"3.22.4",
"3.22.3",
"3.22.2",
"3.22.1",
"3.22.0",
"3.21.1",
"3.21.0",
"3.20.0",
"3.19.3",
"3.19.2",
"3.19.1",
"3.18.2",
"3.19.0",
"3.18.1",
"3.17.7",
"3.18.0",
"3.17.6",
"3.17.5",
"3.17.4",
"3.17.3",
"3.17.2",
"3.17.1",
"3.17.0",
"3.16.1",
"3.16.0",
"3.15.4",
"3.15.3",
"3.15.2",
"3.15.1",
"3.15.0",
"3.14.3",
"3.14.2",
"3.14.1",
"3.14.0",
"3.13.1",
"3.13.0",
"3.12.6",
"3.12.5",
"3.12.4",
"3.12.3",
"3.12.2",
"3.12.1",
"3.11.7",
"3.12.0",
"3.11.6",
"3.11.5",
"3.11.4",
"3.11.3",
"3.11.2",
"3.11.1",
"3.10.1",
"3.11.0",
"3.9.8",
"3.10.0",
"3.9.7",
"3.9.6",
"3.9.5",
"3.9.4",
"3.9.3",
"3.9.2",
"3.9.1",
"3.9.0",
"3.8.7",
"3.8.6",
"3.8.5",
"3.8.4",
"3.8.3",
"3.8.2",
"3.8.1",
"3.8.0",
"3.7.3",
"3.7.2",
"3.7.1",
"3.7.0",
"3.6.5",
"3.6.4",
"3.6.3",
"3.6.2",
"3.6.1",
"3.6.0",
"3.5.10",
"3.5.9",
"3.5.8",
"3.5.7",
"3.5.6",
"3.5.5",
"3.5.4",
"3.5.3",
"3.5.2",
"3.5.1",
"3.5.0",
"3.4.1",
"3.4.0",
"3.2.0",
"3.0.2",
"3.0.1",
"3.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-51016.json"
}
}
],
"modified": "2026-10-28T02:30:23.352498484Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/51xxx/CVE-2022-51016.json",
"https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-h79x-98r2-g6qc",
"https://nvd.nist.gov/vuln/detail/CVE-2022-51016",
"https://www.vulncheck.com/advisories/pocketmine-mp-before-4.0.0-authentication-bypass-via-login-replay",
"https://github.com/pmmp/PocketMine-MP/commit/d28be4eaf24a890f7ef110a51181a3d806a6acca"
],
"provider_metadata": {
"cwe_ids": [
"CWE-294"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/51xxx/CVE-2022-51016.json"
}
},
"related_cves": [
{
"value": "CVE-2022-51016",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 489522,
"published_at": "2026-09-07T12:55:09.18+00:00"
}