{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-106431",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-106431",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-08T18:40:32.206Z",
    "updatedAt": "2026-10-08T19:19:51.552Z",
    "importedAt": "2026-10-24T01:57:50.502Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "One-byte heap buffer overflow in BSON bulk document writer in MongoDB C Driver",
      "summary": "An off-by-one error in the BSON bulk document writer in the MongoDB C Driver can write one zero byte immediately past a heap allocation when a document ends at a specific buffer boundary. An actor who can influence the size of documents serialized by an embedding application can corrupt adjacent process memory or terminate the process. Reaching this issue requires the application to use the BSON bulk-writer API and produce a precise cumulative document size.",
      "affected": [
        {
          "vendor": "MongoDB",
          "product": "C Driver",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0.5.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "1.30.13"
            },
            {
              "version": "2.0.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.5.6"
            }
          ]
        }
      ]
    }
  }
}