{"schema_version":"1.9.0","id":"BIT-minio-2026-34204","published":"2026-04-06T09:26:13.602Z","modified":"2026-09-08T08:48:13.608289394Z","aliases":["CVE-2026-34204","GHSA-3rh2-v3gr-35p9","GO-2026-4896"],"summary":"MinIO is Vulnerable to SSE Metadata Injection via Replication Headers","details":"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.","affected":[{"package":{"name":"minio","ecosystem":"Bitnami","purl":"pkg:bitnami/minio"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2024.03.30"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/minio/BIT-minio-2026-34204.json"},"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"}]}],"references":[{"type":"ADVISORY","url":"https://github.com/minio/minio/security/advisories/GHSA-3rh2-v3gr-35p9"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34204"}],"database_specific":{"cpes":["cpe:2.3:a:minio:minio:*:*:*:*:*:go:*:*"],"severity":"High"}}