{"id":"GHSA-pqp3-8rrw-g8vm","summary":"PocketMine-MP vulnerable to server crash with certain invalid JSON payloads in `LoginPacket` due to vulnerable dependency","details":"### Impact\nAn attacker could crash PocketMine-MP by sending malformed JSON in `LoginPacket`.\n\nThis happened due to a bug in [`netresearch/jsonmapper`](https://github.com/cweiske/JsonMapper). The library wasn't doing proper checks when mapping JSON arrays and objects onto scalar model properties such as strings.\n\n### Patches\nThe problem was fixed in a fork of JsonMapper in dktapps/JsonMapper@a31902a31f5b6fdb832f57c0e3a3f16a3b41c012. PocketMine-MP releases 4.20.5 and 4.21.1 have been released with the fix.\n\n### Workarounds\n- Users of PocketMine-MP source installations may manually install the patched version of JsonMapper by backporting commit pmmp/PocketMine-MP@09668a37d66c6023685a948b7550c918620e98f2.\n- A plugin may also be able to workaround this issue by using `DataPacketReceiveEvent` to attempt detection of suspicious payloads. An `ErrorException` will be thrown in the crash case, which can be caught by plugins.\n\n### References\ncweiske/jsonmapper#210\n","aliases":["CVE-2023-54393"],"modified":"2026-09-10T03:56:00.258001199Z","published":"2023-06-06T01:50:33Z","database_specific":{"nvd_published_at":null,"cwe_ids":[],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2023-06-06T01:50:33Z"},"references":[{"type":"WEB","url":"https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-pqp3-8rrw-g8vm"},{"type":"WEB","url":"https://github.com/cweiske/jsonmapper/pull/210"},{"type":"WEB","url":"https://github.com/pmmp/PocketMine-MP/commit/09668a37d66c6023685a948b7550c918620e98f2"},{"type":"WEB","url":"https://github.com/pmmp/netresearch-jsonmapper/commit/a31902a31f5b6fdb832f57c0e3a3f16a3b41c012"},{"type":"PACKAGE","url":"https://github.com/pmmp/PocketMine-MP"}],"affected":[{"package":{"name":"pocketmine/pocketmine-mp","ecosystem":"Packagist","purl":"pkg:composer/pocketmine/pocketmine-mp"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.20.5"}]}],"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","4.3.0","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"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/06/GHSA-pqp3-8rrw-g8vm/GHSA-pqp3-8rrw-g8vm.json"}},{"package":{"name":"pocketmine/pocketmine-mp","ecosystem":"Packagist","purl":"pkg:composer/pocketmine/pocketmine-mp"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.21.0"},{"fixed":"4.21.1"}]}],"versions":["4.21.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/06/GHSA-pqp3-8rrw-g8vm/GHSA-pqp3-8rrw-g8vm.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}