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

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

https://cvefeed.io/rssfeed/latest.atom / Tue, 05/12/2026 - 02:23
CVE ID :CVE-2026-42600
Published : May 11, 2026, 10:22 p.m. | 24 minutes ago
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.
Severity: 6.9 | MEDIUM
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