Post-authentication use-after-free in server-side JavaScript BSON-to-array conversion_CVE-2026-11933

{
    "lastseen": "",
    "description": "A use-after-free vulnerability exists in MongoDB Server's server-side JavaScript engine when converting BSON documents to JavaScript arrays. An authenticated user with read privileges who is able to run server-side JavaScript (for example, via $where or $function) can cause the server to access memory that has already been freed. This may result in disclosure of information from the mongod process memory or a denial of service through a server crash.",
    "published": "2026-06-12T01:57:32.014Z",
    "modified": "2026-06-12T01:58:46.264Z",
    "type": "cve",
    "title": "Post-authentication use-after-free in server-side JavaScript BSON-to-array conversion",
    "source": "mongodb",
    "references": "https://jira.mongodb.org/browse/SERVER-128125",
    "id": "CVE-2026-11933",
    "bulletinFamily": "",
    "cwe": [
        "CWE-787"
    ],
    "cvelist": null,
    "sourceData": "MongoDB MongoDB 8.3.0\nMongoDB MongoDB 8.2.0\nMongoDB MongoDB 8.0.0\nMongoDB MongoDB 7.0.0\nMongoDB MongoDB 6.0\nMongoDB MongoDB 5.0\nMongoDB MongoDB 4.4.0",
    "sourceHref": "",
    "cvss": {
        "score": 8.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "MongoDB",
    "version": "8.3.0, 8.2.0, 8.0.0, 7.0.0, 6.0, 5.0, 4.4.0",
    "vendor": "MongoDB",
    "ai_description": "Post-authentication use-after-free vulnerability in MongoDB Server's server-side JavaScript engine",
    "ai_severity": "High",
    "ai_vendor": "MongoDB",
    "ai_product": "MongoDB Server",
    "ai_version": "8.3.0, 8.2.0, 8.0.0, 7.0.0, 6.0, 5.0, 4.4.0",
    "ai_score": 8.8
}