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OpenAdvisories
High · 7.1 CVE-2026-34204 EUVD-2026-17600GHSA-3rh2-v3gr-35p9GO-2026-4896

MinIO is Vulnerable to SSE Metadata Injection via Replication Headers

Published Mar 31, 2026 · Updated Apr 1, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
minio minio < RELEASE.2026-03-26T21-24-40Z —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1
openSUSE Leap 15.6 govulncheck-vulndb 0.0.20260402T184258-150000.1.158.1 SUSE-SU-2026:1205-1

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling minio +1 0.20260504.002721-r0 —

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/minio/minio >= 0.0.0-20240328174456-468a9fae83e9, <= 0.0.0-20260212201848-7aac2a2c5b7c — GHSA-3rh2-v3gr-35p9
Go github.com/minio/minio >= 0.0.0-20240328174456-468a9fae83e9 — GO-2026-4896

Advisories 2

References