{
  "cveId": "CVE-2026-18693",
  "url": "https://patchblox.com/security/cve/CVE-2026-18693",
  "summary": "CVE-2026-18693 is fixed in MongoDB on 1 platform by MongoDB 8.3.11 (version 8.3.11), released September 9, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Out-of-Bounds Read/Write in MongoDB Timeseries Bucket Handling Leads to Denial of Service and Potential Memory Disclosure",
  "description": "An issue in MongoDB Server\u0027s handling of timeseries collections could allow an authenticated user with write privileges to cause an internal data structure to become inconsistent through certain document insertions. A subsequent insert into the affected bucket could then result in the server accessing memory outside its intended bounds, potentially causing a server crash (denial of service), exposure of limited memory contents, or memory corruption.",
  "published": "2026-08-11T19:17:23Z",
  "severity": "",
  "cvss": 7.2,
  "cwe": "CWE-787: Out-of-bounds Write",
  "epss": 0.0034,
  "epssPercentile": 0.27641,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2026-18693",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "MongoDB",
      "fixedVersion": "8.3.11",
      "fix": "MongoDB 8.3.11",
      "url": "https://patchblox.com/security/fix/windows-app/mongodb.server-8.3.11",
      "released": "2026-09-09T00:00:00Z"
    }
  ],
  "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"
  }
}