Heap memory out of bounds read and crash in C Driver legacy GridFS file reader_CVE-2026-9100

{
    "lastseen": "",
    "description": "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).",
    "published": "2026-05-20T15:55:13.154Z",
    "modified": "2026-05-20T17:20:32.902Z",
    "type": "cve",
    "title": "Heap memory out of bounds read and crash in C Driver legacy GridFS file reader",
    "source": "mongodb",
    "references": "https://jira.mongodb.org/browse/CDRIVER-6281",
    "id": "CVE-2026-9100",
    "bulletinFamily": "",
    "cwe": [
        "CWE-1285"
    ],
    "cvelist": null,
    "sourceData": "MongoDB, Inc. C Driver 1.0\nMongoDB, Inc. C Driver 2.0",
    "sourceHref": "",
    "cvss": {
        "score": 6,
        "severity": "MEDIUM",
        "vector": "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
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            "privilegesRequired": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "C Driver",
    "version": "1.0",
    "vendor": "MongoDB, Inc.",
    "ai_description": "",
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    "ai_product": "",
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    "ai_score": 0
}