{"id":"GHSA-j5qg-w9jg-3wg3","summary":"Inability to de-op players if listed in ops.txt with non-lowercase letters","details":"### Impact\nOriginally reported in iTXTech/Genisys#1188\n\n```txt\nPotterHarry98\npotterharry98\n```\n\n`deop PotterHarry98`\n\nwill remove `potterharry98` from the ops.txt but not `PotterHarry98`.\n\nOperator permissions are checked using `Config-\u003eexists()` with `lowercase=true`, which will result in a match:\nhttps://github.com/pmmp/PocketMine-MP/blob/22bb1ce8e03dba57173debf0415390511d68e045/src/utils/Config.php#L449\n\nThis means that it's possible to make yourself impossible to de-op (using commands) by adding your name to ops.txt with uppercase letters.\n\n### Patches\n4d37b79ff7f9d9452e988387f97919a9a1c4954e\n\n### Workarounds\nThis can be easily addressed by removing the offending lines from ops.txt manually.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [pmmp/PocketMine-MP](https://github.com/pmmp/PocketMine-MP)\n* Email us at [team@pmmp.io](mailto:team@pmmp.io)\n","aliases":["CVE-2021-48006"],"modified":"2026-09-08T03:55:57.529212755Z","published":"2021-12-16T18:53:57Z","database_specific":{"github_reviewed_at":"2021-12-16T15:47:47Z","nvd_published_at":null,"cwe_ids":[],"severity":"LOW","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-j5qg-w9jg-3wg3"},{"type":"WEB","url":"https://github.com/iTXTech/Genisys/issues/1188"},{"type":"WEB","url":"https://github.com/pmmp/PocketMine-MP/commit/4d37b79ff7f9d9452e988387f97919a9a1c4954e"},{"type":"PACKAGE","url":"https://github.com/pmmp/PocketMine-MP"},{"type":"WEB","url":"https://github.com/pmmp/PocketMine-MP/blob/4.0.3/changelogs/4.0.md#403"}],"affected":[{"package":{"name":"pocketmine/pocketmine-mp","ecosystem":"Packagist","purl":"pkg:composer/pocketmine/pocketmine-mp"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.3"}]}],"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"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/12/GHSA-j5qg-w9jg-3wg3/GHSA-j5qg-w9jg-3wg3.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}