{
 "generated": "2026-11-01",
 "node": {
  "id": "event:postmark-mcp-backdoor",
  "type": "Event",
  "name": "postmark-mcp 后门",
  "slug": "postmark-mcp-backdoor",
  "kind": "incident",
  "kind_zh": "安全事故 / 漏洞披露",
  "summary": "与官方同名的 npm 包正常运行 15 个版本后，第 16 版把所有外发邮件暗中抄送给攻击者，据称波及约 1500 家下游组织；页面称这是公认的首个在野外发现的恶意 MCP 服务器（供应链投毒）。",
  "evidence": [
   {
    "kind": "own",
    "url": "https://xiaopingfeng.com/landscape/agent-security/#player-postmark-mcp",
    "text": "Landscape「Agent 安全攻击面」第 03 层「工具调用 / MCP滥用」的卡片「postmark-mcp 后门」：真实事故 · 供应链投毒"
   }
  ],
  "entry": "agent",
  "by": "landscape-structure",
  "at": "2026-11-01T10:26:39Z",
  "landscape": [
   {
    "map": "agent-security",
    "map_title": "Agent 安全攻击面",
    "card": "player-postmark-mcp",
    "title": "postmark-mcp 后门",
    "layer": "工具调用 / MCP滥用",
    "layer_id": "layer:agent-security--3",
    "role": "primary"
   }
  ],
  "landscape_maps": [
   "agent-security"
  ],
  "landscape_n": 1,
  "degree": 0
 },
 "page": "https://xiaopingfeng.com/graph/e/event/postmark-mcp-backdoor/",
 "out": [
  {
   "type": "placed_in",
   "sentence": "postmark-mcp 后门出现在 Landscape 的「工具调用 / MCP滥用」",
   "direction": "out",
   "id": "layer:agent-security--3",
   "name": "工具调用 / MCP滥用",
   "reported": false,
   "status": "derived",
   "evidence": [
    {
     "kind": "own",
     "label": "本站页面",
     "text": "Landscape「Agent 安全攻击面」第 03 层「工具调用 / MCP滥用」：卡片「postmark-mcp 后门」",
     "url": "https://xiaopingfeng.com/landscape/agent-security/#player-postmark-mcp"
    }
   ]
  }
 ],
 "in": []
}