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:PutOb…
Published: 2026-03-31 · CVSS: 7.1 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7