MinIO is Vulnerable to SSE Metadata Injection via Replication Headers

{
  "id": "af8023c767b47b768863a11df40d1b0a9a63143a5940484b5d02cf43634ab835",
  "url": "https://osv.dev/vulnerability/BIT-minio-2026-34204",
  "method": "structured",
  "payload": {
    "kind": "withdrawal",
    "title": "MinIO is Vulnerable to SSE Metadata Injection via Replication Headers",
    "summary": "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 PutObject request. This issue has been patched in version 2026.03.26.",
    "evidence": "osv:BIT-minio-2026-34204",
    "products": [
      {
        "name": {
          "value": "minio",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "BIT-minio-2026-34204",
      "aliases": [
        "BIT-minio-2026-34204"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "2024.03.30"
                }
              ]
            }
          ],
          "package": {
            "name": "minio",
            "purl": "pkg:bitnami/minio",
            "ecosystem": "Bitnami"
          },
          "severity": [
            {
              "type": "CVSS_V4",
              "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
            }
          ],
          "database_specific": {
            "source": "https://github.com/bitnami/vulndb/tree/main/data/minio/BIT-minio-2026-34204.json"
          }
        }
      ],
      "modified": "2026-10-08T08:11:02.807592955Z",
      "provider": "osv",
      "references": [
        "https://github.com/minio/minio/security/advisories/GHSA-3rh2-v3gr-35p9",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-34204"
      ],
      "provider_metadata": {
        "cpes": [
          "cpe:2.3:a:minio:minio:*:*:*:*:*:go:*:*"
        ],
        "severity": "High"
      }
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 98791,
  "published_at": "2026-04-06T09:26:13.602+00:00"
}