CVE-2026-42600
MinIO vulnerable to Path Traversal via msgpack Body in `ReadMultiple` Storage-REST Endpoint
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/minio/minio | >= 0.0.0-20220724015452, < 0.0.0-20260414213245 | 0.0.0-20260414213245 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Minio | Minio | from 2022-07-24t01-54-52z before 2026-04-14t21-32-45z |