{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:mongodb:c_driver:*:*:*:*:*:mongodb:*:*",
            "extracted_events": [
              {
                "introduced": "1.10.0"
              },
              {
                "fixed": "1.30.8"
              },
              {
                "introduced": "2.0.0"
              },
              {
                "fixed": "2.2.4"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "1cb8a16e863cea77a61530b832ed2c7c1dc5c065"
            },
            {
              "fixed": "57dba9c04991e38124022e0f16c50b87bd9b29a1"
            },
            {
              "introduced": "67817df0a9ed11b07e457477e6db1384da9421c4"
            },
            {
              "fixed": "104e2f8337168126848db06b7e15f4c142a7426e"
            }
          ],
          "repo": "https://github.com/mongodb/mongo-c-driver",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "mongodb",
    "cwe_ids": [
      "CWE-1285"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/9xxx/CVE-2026-9100.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "1.0"
          },
          {
            "fixed": "1.30.8"
          },
          {
            "introduced": "2.0"
          },
          {
            "fixed": "2.2.4"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation. Crafted documents in a GridFS collection may cause any application that reads those files via the legacy API to either crash (via a division-by-zero) or silently leak process memory contents (via an out-of-bounds read).",
  "id": "CVE-2026-9100",
  "modified": "2026-09-26T03:31:02.438814428Z",
  "published": "2026-05-20T15:55:13.154Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/9xxx/CVE-2026-9100.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9100"
    },
    {
      "type": "REPORT",
      "url": "https://jira.mongodb.org/browse/CDRIVER-6281"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Heap memory out of bounds read and crash in C Driver legacy GridFS file reader"
}