MinIO: Path Traversal via msgpack Body in `ReadMultiple` Storage-REST Endpoint_CVE-2026-42600

{
    "lastseen": "",
    "description": "MinIO is a high-performance object storage system. From RELEASE.2022-07-24T01-54-52Z to before RELEASE.2026-04-14T21-32-45Z, A path traversal vulnerability in MinIO's ReadMultiple internode storage-REST endpoint allows a caller holding the cluster root JWT to read files from outside the configured drive roots, bounded only by the MinIO process UID. The attacker sends POST minio/storage/{drivePath}/v63/rmpl with a msgpack-encoded body carrying ../ sequences in the Bucket field. The server opens the resulting path via os.OpenFile with O_RDONLY|O_NOATIME and returns its contents in the msgpack response stream. This vulnerability is fixed in RELEASE.2026-04-14T21-32-45Z.",
    "published": "2026-05-11T20:53:10.885Z",
    "modified": "2026-05-11T20:53:10.885Z",
    "type": "cve",
    "title": "MinIO: Path Traversal via msgpack Body in `ReadMultiple` Storage-REST Endpoint",
    "source": "GitHub_M",
    "references": "https://github.com/minio/minio/security/advisories/GHSA-xh8f-g2qw-gcm7",
    "id": "CVE-2026-42600",
    "bulletinFamily": "",
    "cwe": [
        "CWE-22"
    ],
    "cvelist": null,
    "sourceData": "minio minio >= RELEASE.2022-07-24T01-54-52Z, < RELEASE.2026-04-14T21-32-45Z",
    "sourceHref": "",
    "cvss": {
        "score": 6.9,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
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        "baseScore": 0,
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        "confidentialityImpact": "",
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        "cvssV3": {
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    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "minio",
    "version": ">= RELEASE.2022-07-24T01-54-52Z, < RELEASE.2026-04-14T21-32-45Z",
    "vendor": "minio",
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    "ai_score": 0
}