CVE-2026-34204

MinIO is a high-performance object storage system. Prior to version RELEASE.2026-03-26T21-24-40Z, a flaw in extractMetadataFromMime() allows any authenticated user with s3:PutObject permission to inject internal server-side encryption metadata into objects by sending crafted X-Minio-Replication-* headers on a normal PutObject request. This issue has been patched in version RELEASE.2026-03-26T21-24-40Z.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/minio/minio/security/advisories/GHSA-3rh2-v3gr-35p9	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:minio:minio:*:*:*:*:*:*:*:*

History

07 Apr 2026, 16:06

Type	Values Removed	Values Added
References	~~() https://github.com/minio/minio/security/advisories/GHSA-3rh2-v3gr-35p9 -~~	() https://github.com/minio/minio/security/advisories/GHSA-3rh2-v3gr-35p9 - Vendor Advisory
CPE		cpe:2.3:a:minio:minio::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.1
First Time		Minio Minio minio

31 Mar 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-31 20:16

Updated : 2026-06-17 10:38

NVD link : CVE-2026-34204

Mitre link : CVE-2026-34204

CVE.ORG link : CVE-2026-34204

JSON object : View

Products Affected

minio

minio

CWE

CWE-287

Improper Authentication

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