CVE-2026-42600CWE-22

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

Medium · published May 11, 2026

CVSS v4.0
6.9
EPSS
0%
Percentile
40.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · 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
EPSS
0.00474 · 40.0th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-05-11T20:53Z
EPSS history
Timeline
  • 11 MAY 20:53Z
    MinIO: Path Traversal via msgpack Body in `ReadMultiple` Storage-REST Endpoint
    cvelistv5