{
  "cveId": "CVE-2026-9747",
  "url": "https://patchblox.com/security/cve/CVE-2026-9747",
  "summary": "CVE-2026-9747 is fixed in MongoDB on 1 platform by MongoDB 8.3.3 (version 8.3.3), released May 28, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Crafted cross-shard merge aggregation crashes MongoDB Server",
  "description": "Adding fromRouter:true and runtimeConstants.userRoles could cause aggregations to crash mongodb server.",
  "published": "2026-06-09T23:17:04Z",
  "severity": "",
  "cvss": 7.1,
  "cwe": "CWE-617: Reachable assertion",
  "epss": 0.0027,
  "epssPercentile": 0.19244,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2026-9747",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "MongoDB",
      "fixedVersion": "8.3.3",
      "fix": "MongoDB 8.3.3",
      "url": "https://patchblox.com/security/fix/windows-app/mongodb.server-8.3.3",
      "released": "2026-05-28T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}