{
  "cveId": "CVE-2026-84971",
  "url": "https://patchblox.com/security/cve/CVE-2026-84971",
  "summary": "CVE-2026-84971 is fixed in libmongocrypt on 1 platform by DEBIAN-CVE-2026-84971 (version 1.20.4-1), released September 10, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "libmongocrypt: Improper handling of an unexpected value size in the decryption path of a client-side encryption library can cause a...",
  "description": "Improper handling of an unexpected value size in the decryption path of a client-side encryption library can cause a failed internal check that terminates the process using the library. A party able to place a suitably formed encrypted value where an application will decrypt it, or able to control the responses the application receives, may cause that application to stop running.",
  "published": "2026-09-03T15:17:36Z",
  "severity": "",
  "epss": 0.00259,
  "epssPercentile": 0.17702,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libmongocrypt",
      "release": "Debian 14",
      "fixedVersion": "1.20.4-1",
      "fix": "DEBIAN-CVE-2026-84971",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-84971",
      "released": "2026-09-10T12:12:19Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}