FlatBSON Duplicate Field Index Drift_CVE-2026-8053

8.7 / 10

HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Description

An issue in MongoDB Server's time-series collection implementation allows an authenticated user with database write privileges to trigger an out-of-bounds memory write in the mongod process. The issue results from an inconsistency in the internal field-name-to-index mapping within the time-series bucket catalog. Under certain conditions this can result in arbitrary code execution.

This issue impacts MongoDB Server v5.0 versions prior to 5.0.33, v6.0 versions prior to 6.0.28, v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.

Basic Information

ID CVE-2026-8053

Source mongodb

Published May 12, 2026 at 23:59

Affected Product

Vendor MongoDB, Inc.

Product MongoDB Server

Version 5.0

Affected Versions MongoDB, Inc. MongoDB Server 5.0
MongoDB, Inc. MongoDB Server 6.0
MongoDB, Inc. MongoDB Server 7.0
MongoDB, Inc. MongoDB Server 8.0
MongoDB, Inc. MongoDB Server 8.2
MongoDB, Inc. MongoDB Server 8.3

CWE Classification

CWE-787

References

jira.mongodb.org /browse/SERVER-126021

{
    "lastseen": "",
    "description": "An issue in MongoDB Server's time-series collection implementation allows an authenticated user with database write privileges to trigger an out-of-bounds memory write in the mongod process. The issue results from an inconsistency in the internal field-name-to-index mapping within the time-series bucket catalog. Under certain conditions this can result in arbitrary code execution.\n\nThis issue impacts MongoDB Server v5.0 versions prior to 5.0.33, v6.0 versions prior to 6.0.28, v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.",
    "published": "2026-05-12T23:59:43.448Z",
    "modified": "2026-05-12T23:59:43.448Z",
    "type": "cve",
    "title": "FlatBSON Duplicate Field Index Drift",
    "source": "mongodb",
    "references": "https://jira.mongodb.org/browse/SERVER-126021",
    "id": "CVE-2026-8053",
    "bulletinFamily": "",
    "cwe": [
        "CWE-787"
    ],
    "cvelist": null,
    "sourceData": "MongoDB, Inc. MongoDB Server 5.0\nMongoDB, Inc. MongoDB Server 6.0\nMongoDB, Inc. MongoDB Server 7.0\nMongoDB, Inc. MongoDB Server 8.0\nMongoDB, Inc. MongoDB Server 8.2\nMongoDB, Inc. MongoDB Server 8.3",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "MongoDB Server",
    "version": "5.0",
    "vendor": "MongoDB, Inc.",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}