{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "pocketmine/pocketmine-mp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0"
            },
            {
              "fixed": "4.0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": true,
    "github_reviewed_at": "2022-01-21T21:16:09Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\nWhen handling form responses from the client (`ModalFormResponsePacket`), the Minecraft Windows client may send weird JSON that `json_decode()` can\u0027t understand. A workaround for this is implemented in `InGamePacketHandler::stupid_json_decode()`.\n\nAn `InvalidArgumentException` is thrown by this function when it fails to fix an error found in the JSON, which is not caught by the caller. This leads to a server crash.\n\n### Patches\n56fe71d939c38fe14e18a31a673a9331bcc0e4ca\n\n### Workarounds\nA plugin may handle `DataPacketReceiveEvent`, capture `ModalFormResponsePacket` and run the provided JSON through `stupid_json_decode`.\n\nNote that this requires copying the body of the function to a plugin, since the function is currently private.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [team@pmmp.io](mailto:team@pmmp.io)",
  "id": "GHSA-wjfq-88q2-r34j",
  "modified": "2025-12-26T17:29:53Z",
  "published": "2022-01-21T23:02:14Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-wjfq-88q2-r34j"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pmmp/PocketMine-MP/commit/56fe71d939c38fe14e18a31a673a9331bcc0e4ca"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pmmp/PocketMine-MP"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pmmp/PocketMine-MP/blob/4.0.7/changelogs/4.0.md#407"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Unhandled exception when decoding form response JSON"
}