{
  "cveId": "CVE-2026-1849",
  "url": "https://patchblox.com/security/cve/CVE-2026-1849",
  "summary": "CVE-2026-1849 is fixed in MongoDB on 1 platform by MongoDB 8.0.18 (version 8.0.18), released January 15, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Mongod can run out of stack memory when expressions create deeply nested documents",
  "description": "MongoDB Server may experience an out-of-memory failure while evaluating expressions that produce deeply nested documents. The issue arises in recursive functions because the server does not periodically check the depth of the expression.",
  "published": "2026-02-10T19:15:51Z",
  "severity": "",
  "cvss": 7.1,
  "cwe": "CWE-674: Uncontrolled Recursion",
  "epss": 0.00326,
  "epssPercentile": 0.25876,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2026-1849",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "MongoDB",
      "fixedVersion": "8.0.18",
      "fix": "MongoDB 8.0.18",
      "url": "https://patchblox.com/security/fix/windows-app/mongodb.server-8.0.18",
      "released": "2026-01-15T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}