{"id":"CVE-2026-86198","aliases":["EUVD-2026-74909","GHSA-hp34-98g7-38jv","GHSA-pg53-p7qp-65cv"],"status":"published","title":"PocketMine-MP before 5.44.2 Denial of Service via ResourcePackClientResponsePacket","description":"PocketMine-MP versions before 5.44.2 fail to properly validate multiple ResourcePackClientResponsePacket packets with STATUS_COMPLETED status during resource pack handling. Malicious clients can send batches of these packets to repeatedly trigger pre-spawn progression, creating duplicate Player objects and amplifying memory consumption and network traffic.","severity":{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00382,"percentile":0.32633,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-837"],"published":"2026-09-09T13:32:00Z","modified":"2026-10-29T16:45:05Z","fixes":[{"ecosystem":"Packagist","package":"pocketmine/pocketmine-mp","fixed_in":["5.44.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"pocketmine/pocketmine-mp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.44.2"}]}]},{"source":"osv","ecosystem":"Packagist","package":"pocketmine/pocketmine-mp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.44.2"}]}],"versions":["3.0.0","3.0.1","3.0.10","3.0.11","3.0.12","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.0.7","3.0.8","3.0.9","3.1.0","3.1.1","3.1.2","3.1.3","3.1.4","3.1.5","3.1.6","3.1.7","3.1.8","3.10.0","3.10.1","3.11.0","3.11.1","3.11.2","3.11.3","3.11.4","3.11.5","3.11.6","3.11.7","3.12.0","3.12.1","3.12.2","3.12.3","3.12.4","3.12.5","3.12.6","3.13.0","3.13.1","3.14.0","3.14.1","3.14.2","3.14.3","3.15.0","3.15.1","3.15.2","3.15.3","3.15.4","3.16.0","3.16.1","3.17.0","3.17.1","3.17.2","3.17.3","3.17.4","3.17.5","3.17.6","3.17.7","3.18.0","3.18.1","3.18.2","3.19.0","3.19.1","3.19.2","3.19.3","3.2.0","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5","3.2.6","3.2.7","3.20.0","3.21.0","3.21.1","3.22.0","3.22.1","3.22.2","3.22.3","3.22.4","3.22.5","3.23.0","3.23.1","3.24.0","3.25.0","3.25.1","3.25.2","3.25.3","3.25.4","3.25.5","3.25.6","3.26.0","3.26.1","3.26.2","3.26.3","3.26.4","3.26.5","3.27.0","3.28.0","3.3.0","3.3.1","3.3.2","3.3.3","3.3.4","3.4.0","3.4.1","3.4.2","3.4.3","3.5.0","3.5.1","3.5.10","3.5.11","3.5.12","3.5.13","3.5.2","3.5.3","3.5.4","3.5.5","3.5.6","3.5.7","3.5.8","3.5.9","3.6.0","3.6.1","3.6.2","3.6.3","3.6.4","3.6.5","3.6.6","3.7.0","3.7.1","3.7.2","3.7.3","3.8.0","3.8.1","3.8.2","3.8.3","3.8.4","3.8.5","3.8.6","3.8.7","3.9.0","3.9.1","3.9.2","3.9.3","3.9.4","3.9.5","3.9.6","3.9.7","3.9.8","4.0.0","4.0.0-BETA1","4.0.0-BETA10","4.0.0-BETA11","4.0.0-BETA12","4.0.0-BETA13","4.0.0-BETA14","4.0.0-BETA15","4.0.0-BETA2","4.0.0-BETA3","4.0.0-BETA4","4.0.0-BETA5","4.0.0-BETA6","4.0.0-BETA7","4.0.0-BETA8","4.0.0-BETA9","4.0.1","4.0.2","4.0.3","4.0.4","4.0.5","4.0.6","4.0.7","4.0.8","4.0.9","4.1.0","4.1.0-BETA1","4.1.0-BETA2","4.10.0","4.10.1","4.10.2","4.11.0","4.11.0-BETA1","4.11.0-BETA2","4.12.0","4.12.1","4.12.10","4.12.11","4.12.2","4.12.3","4.12.4","4.12.5","4.12.6","4.12.7","4.12.8","4.12.9","4.13.0","4.13.0-BETA1","4.14.0","4.14.1","4.15.0","4.15.1","4.15.2","4.15.3","4.16.0","4.16.0-BETA1","4.16.0-BETA2","4.17.0","4.17.1","4.17.2","4.18.0","4.18.0-ALPHA1","4.18.0-ALPHA2","4.18.1","4.18.2","4.18.3","4.18.4","4.19.0","4.19.1","4.19.2","4.19.3","4.2.0","4.2.1","4.2.10","4.2.2","4.2.3","4.2.4","4.2.5","4.2.6","4.2.7","4.2.8","4.2.9","4.20.0","4.20.1","4.20.2","4.20.3","4.20.4","4.20.5","4.21.0","4.21.1","4.22.0","4.22.1","4.22.2","4.22.3","4.23.0","4.23.1","4.23.2","4.23.3","4.23.4","4.23.5","4.23.6","4.24.0","4.25.0","4.26.0","4.3.0","4.3.1","4.3.2","4.3.3","4.3.4","4.4.0","4.4.0-BETA1","4.4.1","4.4.2","4.5.0","4.5.1","4.5.2","4.6.0","4.6.1","4.6.2","4.7.0","4.7.1","4.7.2","4.7.3","4.8.0","4.8.1","4.9.0","4.9.1","5.0.0","5.0.0-ALPHA1","5.0.0-ALPHA2","5.0.0-ALPHA3","5.0.0-ALPHA4","5.0.0-ALPHA5","5.0.0-ALPHA6","5.0.0-ALPHA7","5.0.0-ALPHA8","5.0.0-ALPHA9","5.0.0-BETA1","5.0.0-BETA2","5.0.0-BETA3","5.0.0-BETA4","5.0.1","5.1.0","5.1.1","5.1.2","5.1.3","5.10.0","5.11.0","5.11.1","5.11.2","5.12.0","5.12.1","5.13.0","5.14.0","5.14.1","5.15.0","5.16.0","5.17.0","5.17.1","5.18.0","5.18.1","5.19.0","5.2.0","5.2.1","5.20.0","5.20.1","5.21.0","5.21.1","5.21.2","5.22.0","5.23.0","5.23.1","5.23.2","5.23.3","5.24.0","5.25.0","5.25.1","5.25.2","5.26.0","5.27.0","5.27.1","5.28.0","5.28.1","5.28.2","5.29.0","5.3.0","5.3.1","5.3.2","5.3.3","5.3.4","5.30.0","5.30.1","5.31.0","5.32.0","5.32.1","5.33.0","5.33.1","5.33.2","5.34.0","5.34.1","5.35.0","5.35.1","5.36.0","5.37.0","5.37.1","5.37.2","5.37.3","5.38.0","5.39.0","5.39.1","5.39.2","5.39.3","5.4.0","5.4.1","5.4.2","5.4.3","5.4.4","5.40.0","5.41.0","5.41.1","5.42.0","5.42.1","5.43.0","5.43.1","5.43.2","5.44.1","5.5.0","5.5.0-BETA1","5.6.0","5.6.1","5.7.0","5.7.1","5.8.1","5.8.2","5.9.0"]}],"products":[{"vendor":"pmmp","product":"pocketmine-mp"}],"references":[{"url":"https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-pg53-p7qp-65cv","tags":["vendor-advisory","advisory","web"]},{"url":"https://github.com/pmmp/PocketMine-MP/commit/7a27894146a04964ab628ed9033140fdbf887ff3","tags":["patch","fix","web"]},{"url":"https://www.vulncheck.com/advisories/pocketmine-mp-before-5.44.2-denial-of-service-via-resourcepackclientresponsepacket","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86198","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hp34-98g7-38jv"},{"url":"https://github.com/pmmp/PocketMine-MP/releases/tag/5.44.2","tags":["web"]},{"url":"https://github.com/advisories/GHSA-pg53-p7qp-65cv"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86198.json","tags":["advisory"]},{"url":"https://github.com/pmmp/PocketMine-MP","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-86198","title":"PocketMine-MP before 5.44.2 Denial of Service via ResourcePackClientResponsePacket","description":"PocketMine-MP versions before 5.44.2 fail to properly validate multiple ResourcePackClientResponsePacket packets with STATUS_COMPLETED status during resource pack handling. Malicious clients can send batches of these packets to repeatedly trigger pre-spawn progression, creating duplicate Player objects and amplifying memory consumption and network traffic.","status":"published","published":"2026-09-09T13:32:00.417Z","modified":"2026-09-10T14:58:07.124Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low","assessor":"cna"},{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-837"],"updated_at":"2026-11-02T13:49:31.546614Z"}],"euvd":[{"id":"EUVD-2026-74909","description":"PocketMine-MP versions before 5.44.2 fail to properly validate multiple ResourcePackClientResponsePacket packets with STATUS_COMPLETED status during resource pack handling. Malicious clients can send batches of these packets to repeatedly trigger pre-spawn progression, creating duplicate Player objects and amplifying memory consumption and network traffic.","status":"published","published":"2026-09-09T13:32:00Z","modified":"2026-09-10T14:58:07Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low"}],"updated_at":"2026-11-02T17:28:24.501469Z"}],"ghsa":[{"id":"GHSA-hp34-98g7-38jv","title":"PocketMine-MP versions before 5.44.2 fail to properly validate multiple...","description":"PocketMine-MP versions before 5.44.2 fail to properly validate multiple ResourcePackClientResponsePacket packets with STATUS_COMPLETED status during resource pack handling. Malicious clients can send batches of these packets to repeatedly trigger pre-spawn progression, creating duplicate Player objects and amplifying memory consumption and network traffic.","status":"published","published":"2026-09-09T15:35:11Z","modified":"2026-09-09T15:35:17Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low"},{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"cwes":["CWE-837"],"updated_at":"2026-11-02T15:11:38.712835Z"},{"id":"GHSA-pg53-p7qp-65cv","title":"PocketMine-MP has potential memory/network vulnerability from repeated ResourcePackClientResponsePacket packets","description":"### Summary\nDuring the resource pack stage of logging in, after the server sends `ResourcePackStackPacket`, a malicious client can send a batch of multiple `ResourcePackClientResponsePacket` packets with status `ResourcePackClientResponsePacket::STATUS_COMPLETED` causing the server to repeatedly execute pre-spawn progression.\n\n###  Impact\nMultiple `Player` objects can be created for just a single session, increasing memory usage and amplifying outbound network traffic from duplication of large pre-spawn packets such as `AvailableCommandsPacket` and `CreativeContentPacket`.\n\n### Workarounds\nPlugins can use their own `PacketHandler` classes that reject/ignore any extra `ResourcePackClientResponsePacket` packets.\n\n### Patches\nThis issue was patched in https://github.com/pmmp/PocketMine-MP/commit/7a27894146a04964ab628ed9033140fdbf887ff3 and released in 5.44.2.","status":"published","published":"2026-10-29T16:32:58Z","modified":"2026-10-29T16:33:02Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low"}],"cwes":["CWE-837"],"updated_at":"2026-11-02T14:41:41.028239Z"}],"nvd":[{"id":"CVE-2026-86198","description":"PocketMine-MP versions before 5.44.2 fail to properly validate multiple ResourcePackClientResponsePacket packets with STATUS_COMPLETED status during resource pack handling. Malicious clients can send batches of these packets to repeatedly trigger pre-spawn progression, creating duplicate Player objects and amplifying memory consumption and network traffic.","status":"published","published":"2026-09-09T14:17:20.837Z","modified":"2026-09-10T15:17:50.15Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"},{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-837"],"updated_at":"2026-11-02T14:12:45.93749Z"}],"osv":[{"id":"CVE-2026-86198","title":"PocketMine-MP before 5.44.2 Denial of Service via ResourcePackClientResponsePacket","description":"PocketMine-MP versions before 5.44.2 fail to properly validate multiple ResourcePackClientResponsePacket packets with STATUS_COMPLETED status during resource pack handling. Malicious clients can send batches of these packets to repeatedly trigger pre-spawn progression, creating duplicate Player objects and amplifying memory consumption and network traffic.","status":"published","published":"2026-09-09T13:32:00.417Z","modified":"2026-10-28T02:30:53.019474497Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low"}],"cwes":["CWE-837"],"updated_at":"2026-11-02T15:45:18.825071Z"},{"id":"GHSA-pg53-p7qp-65cv","title":"PocketMine-MP has potential memory/network vulnerability from repeated ResourcePackClientResponsePacket packets","description":"### Summary\nDuring the resource pack stage of logging in, after the server sends `ResourcePackStackPacket`, a malicious client can send a batch of multiple `ResourcePackClientResponsePacket` packets with status `ResourcePackClientResponsePacket::STATUS_COMPLETED` causing the server to repeatedly execute pre-spawn progression.\n\n###  Impact\nMultiple `Player` objects can be created for just a single session, increasing memory usage and amplifying outbound network traffic from duplication of large pre-spawn packets such as `AvailableCommandsPacket` and `CreativeContentPacket`.\n\n### Workarounds\nPlugins can use their own `PacketHandler` classes that reject/ignore any extra `ResourcePackClientResponsePacket` packets.\n\n### Patches\nThis issue was patched in https://github.com/pmmp/PocketMine-MP/commit/7a27894146a04964ab628ed9033140fdbf887ff3 and released in 5.44.2.","status":"published","published":"2026-10-29T16:32:58Z","modified":"2026-10-29T16:45:05.772218679Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low"}],"cwes":["CWE-837"],"updated_at":"2026-11-02T15:46:53.244788Z"}]}}