HIGHCVE-2026-34204Published Modified CNA GitHub_M
CVE-2026-34204: MinIO is Vulnerable to SSE Metadata Injection via Replication Headers
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.
Metrics
- CVSS v4.0
- 7.1
- Severity
- HIGH
- Fixed in
- —
- Affected Products
- 1
Affected packages
- minio / minio< RELEASE.2026-03-26T21-24-40Z
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N