{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "pocketmine/pocketmine-mp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.39.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-406"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-06T22:54:10Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\nThe server handles `ActorEventPacket` to trigger consuming animations from vanilla clients when they eat food or drink potions.\n\nThis can be abused to make the server spam other clients, and to waste server CPU and memory. For every `ActorEventPacket` sent by the client, an animation event will be sent to every other player the attacker is visible to.\n\nThis is similar to various other vulnerabilities which were fixed in the network overhaul of PM4 (e.g. `AnimatePacket` and `LevelSoundEventPacket`), but somehow this one slipped through the net.\n\n### Patches\nThe problem was addressed in aeea1150a772a005b92bd418366f1b7cf1a91ab5 by changing the mechanism for consuming animations to be fully controlled by the server. `ActorEventPacket` from the client is now discarded.\n\n### Workarounds\nA plugin could use `DataPacketDecodeEvent` to rate-limit `ActorEventPacket` to prevent the attack.",
  "id": "GHSA-7hmv-4j2j-pp6f",
  "modified": "2026-04-06T22:54:10Z",
  "published": "2026-04-06T22:54:10Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-7hmv-4j2j-pp6f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pmmp/PocketMine-MP/commit/aeea1150a772a005b92bd418366f1b7cf1a91ab5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pmmp/PocketMine-MP"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "PocketMine-MP: Network amplification vulnerability with `ActorEventPacket`"
}