BIT-MINIO-2026-34204 MinIO is Vulnerable to SSE Metadata Injection via Replication Headers

MinIO is a high-performance object storage system. Prior to version 2026.03.26, 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...

PT-2026-29942

MinIO is Vulnerable to SSE Metadata Injection via Replication Headers in github.com/minio/minio...

CVE-2026-34204

CVE-2026-34204 affects the MinIO object storage system. A flaw in extractMetadataFromMime() lets any authenticated user with s3:PutObject inject internal server-side encryption metadata into objects by sending crafted X-Minio-Replication-* headers on a normal PutObject request. The issue is fixed...