CVE-2026-42600: MinIO is a high-performance object storage system

This week

MEDIUM 4.9UPGRADE

CVE-2026-42600 is a medium-severity flaw (CVSS 4.9) affecting minio. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 ../

Why this priority

EPSS top 5%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	4.9 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	8.7% (top 5%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-05-11
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: minio

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-11 22:22 UTCPublished CVE record published
2026-06-17 10:48 UTCUpdated Record last modified

minio minio UPGRADE

Affected: >= 2022-07-24t01-54-52z and < 2026-04-14t21-32-45z

Fixed in: 2026-04-14t21-32-45z

Safe to downgrade to: a release before 2022-07-24t01-54-52z

1. Check installed version

apt-cache policy minio || rpm -q minio || minio --version

2. UPGRADE to 2026-04-14t21-32-45z (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade minio

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade minio

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2022-07-24t01-54-52z (Debian / Ubuntu)

apt-cache madison minio sudo apt install minio=<VERSION_BEFORE_2022-07-24t01-54-52z> sudo apt-mark hold minio

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list minio sudo dnf downgrade minio-<VERSION_BEFORE_2022-07-24t01-54-52z> sudo dnf versionlock add minio

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-42600?

minio: upgrade to 2026-04-14t21-32-45z. Exact commands for each OS are on this page.

Is CVE-2026-42600 being exploited?

CVE-2026-42600 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-42600 affect?

CVE-2026-42600 affects minio. Severity is medium (CVSS 4.9). 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

How urgent is CVE-2026-42600?

Priority 41/100. EPSS top 5%: very likely to be exploited

Software pages

MinIO vulnerabilities

References

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