{"id":"CVE-2023-54396","aliases":["EUVD-2023-60626","GHSA-7986-3j64-vgx5","GHSA-wqqv-jcfr-9f5g"],"status":"published","title":"PocketMine-MP before 4.8.1 Server Crash via Banner NBT","description":"PocketMine-MP versions before 4.8.1 fail to validate dye color IDs in banner NBT data during deserialization. Attackers can provide invalid color values in inventory transactions or via commands to trigger undefined offset errors and crash the server.","severity":{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0053,"percentile":0.45125,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-129"],"published":"2023-01-09T20:07:27Z","modified":"2026-10-28T02:31:14Z","fixes":[{"ecosystem":"Packagist","package":"pocketmine/pocketmine-mp","fixed_in":["4.8.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"pocketmine/pocketmine-mp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.1"}]}]},{"source":"osv","ecosystem":"Packagist","package":"pocketmine/pocketmine-mp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.1"}]}],"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","4.2.0","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","4.3.0","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"]}],"products":[{"vendor":"pmmp","product":"pocketmine-mp"}],"references":[{"url":"https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-wqqv-jcfr-9f5g","tags":["vendor-advisory","advisory","web"]},{"url":"https://github.com/pmmp/PocketMine-MP/commit/08b9495bce2d65a6d1d3eeb76e484499a00765eb","tags":["patch","fix","web"]},{"url":"https://www.vulncheck.com/advisories/pocketmine-mp-before-4.8.1-server-crash-via-banner-nbt","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-54396","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-7986-3j64-vgx5"},{"url":"https://github.com/pmmp/PocketMine-MP/blob/38d6284671e8b657ba557e765a6c29b24a7705f5/src/item/Banner.php#L104","tags":["web"]},{"url":"https://github.com/advisories/GHSA-wqqv-jcfr-9f5g"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54396.json","tags":["advisory"]},{"url":"https://github.com/pmmp/PocketMine-MP","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-54396","title":"PocketMine-MP before 4.8.1 Server Crash via Banner NBT","description":"PocketMine-MP versions before 4.8.1 fail to validate dye color IDs in banner NBT data during deserialization. Attackers can provide invalid color values in inventory transactions or via commands to trigger undefined offset errors and crash the server.","status":"published","published":"2026-09-09T13:31:54.17Z","modified":"2026-10-08T15:21:09.045Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-129"],"updated_at":"2026-11-02T14:35:15.066338Z"}],"euvd":[{"id":"EUVD-2023-60626","description":"PocketMine-MP versions before 4.8.1 fail to validate dye color IDs in banner NBT data during deserialization. Attackers can provide invalid color values in inventory transactions or via commands to trigger undefined offset errors and crash the server.","status":"published","published":"2026-09-09T13:31:54Z","modified":"2026-10-08T15:21:09Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T17:27:32.18003Z"}],"ghsa":[{"id":"GHSA-7986-3j64-vgx5","title":"PocketMine-MP versions before 4.8.1 fail to validate dye color IDs in banner NBT data during...","description":"PocketMine-MP versions before 4.8.1 fail to validate dye color IDs in banner NBT data during deserialization. Attackers can provide invalid color values in inventory transactions or via commands to trigger undefined offset errors and crash the server.","status":"published","published":"2026-09-09T15:35:10Z","modified":"2026-09-09T15:35:10Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/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":"high"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-129"],"updated_at":"2026-11-02T15:11:38.712835Z"},{"id":"GHSA-wqqv-jcfr-9f5g","title":"PocketMine-MP has improperly handled dye colour IDs in banner NBT, leading to server crash","description":"### Impact\n`DyeColorIdMap-\u003efromId()` did not account for the possibility that it might be given invalid input. This means that an undefined offset error would occur whenever this happened.\n\nThis code is indirectly called during [`Banner-\u003edeserializeCompoundTag()`](https://github.com/pmmp/PocketMine-MP/blob/38d6284671e8b657ba557e765a6c29b24a7705f5/src/item/Banner.php#L104), which is invoked when deserializing any item NBT, whether from network or disk.\n\nAn attacker could use this bug to crash a server by providing NBT with invalid values for pattern colours in an inventory transaction, or by using `/give` to obtain an item with NBT like this.\n\n### Patches\n08b9495bce2d65a6d1d3eeb76e484499a00765eb\n\n### Workarounds\nThis is quite difficult to work around via a plugin. Theoretically, it's possible to override the `Banner` item class from a plugin and validate the data before it reaches `deserializeCompoundTag()`.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [security@pmmp.io](mailto:security@pmmp.io)","status":"published","published":"2023-01-09T20:07:27Z","modified":"2025-12-26T17:28:43Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T14:39:14.093341Z"}],"nvd":[{"id":"CVE-2023-54396","description":"PocketMine-MP versions before 4.8.1 fail to validate dye color IDs in banner NBT data during deserialization. Attackers can provide invalid color values in inventory transactions or via commands to trigger undefined offset errors and crash the server.","status":"published","published":"2026-09-09T14:17:09.883Z","modified":"2026-10-08T16:16:48.987Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/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":"high","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-129"],"updated_at":"2026-11-02T14:09:27.733183Z"}],"osv":[{"id":"CVE-2023-54396","title":"PocketMine-MP before 4.8.1 Server Crash via Banner NBT","description":"PocketMine-MP versions before 4.8.1 fail to validate dye color IDs in banner NBT data during deserialization. Attackers can provide invalid color values in inventory transactions or via commands to trigger undefined offset errors and crash the server.","status":"published","published":"2026-09-09T13:31:54.17Z","modified":"2026-10-28T02:31:14.879022174Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-129"],"updated_at":"2026-11-02T15:44:36.851042Z"},{"id":"GHSA-wqqv-jcfr-9f5g","title":"PocketMine-MP has improperly handled dye colour IDs in banner NBT, leading to server crash","description":"### Impact\n`DyeColorIdMap-\u003efromId()` did not account for the possibility that it might be given invalid input. This means that an undefined offset error would occur whenever this happened.\n\nThis code is indirectly called during [`Banner-\u003edeserializeCompoundTag()`](https://github.com/pmmp/PocketMine-MP/blob/38d6284671e8b657ba557e765a6c29b24a7705f5/src/item/Banner.php#L104), which is invoked when deserializing any item NBT, whether from network or disk.\n\nAn attacker could use this bug to crash a server by providing NBT with invalid values for pattern colours in an inventory transaction, or by using `/give` to obtain an item with NBT like this.\n\n### Patches\n08b9495bce2d65a6d1d3eeb76e484499a00765eb\n\n### Workarounds\nThis is quite difficult to work around via a plugin. Theoretically, it's possible to override the `Banner` item class from a plugin and validate the data before it reaches `deserializeCompoundTag()`.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [security@pmmp.io](mailto:security@pmmp.io)","status":"published","published":"2023-01-09T20:07:27Z","modified":"2026-09-10T03:56:11.389995063Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:46:59.131095Z"}]}}