{"answers":{"affected":"3 open source packages ship an affected version, including github.com/minio/minio. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-34204 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-34204 is a high-severity missing authorization vulnerability in minio, published on 31 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-34204 and fix it if it is affected.\n\nWhat it is: CVE-2026-34204 is a high-severity missing authorization vulnerability in minio, published on 31 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-34204 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/minio/minio (Go): affected from 0.0.0-20240328174456-468a9fae83e9; no fix listed\n- github.com/minio/minio (Go): affected from 0.0.0-20240328174456-468a9fae83e9 up to 0.0.0-20260212201848-7aac2a2c5b7c; no fix listed\n- github.com/minio/minio (Go): affected from 0.0.0-20240328174456-468a9fae83e9 up to 0.0.0-20260212201848-7aac2a2c5b7c; no fix listed\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-34204/ (Markdown: https://insights.sbomify.com/CVE-2026-34204/index.md)","id":"CVE-2026-34204","markdown":"https://insights.sbomify.com/CVE-2026-34204/index.md","name":"CVE-2026-34204","record":{"aliases":["GHSA-3rh2-v3gr-35p9","GO-2026-4896","MINI-8666-286m-47gj","MINI-c6p4-3gv7-fg4h"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"MinIO object storage","requires_auth":"low_privilege","summary":"Authenticated users can inject server-side encryption metadata via replication headers, bypassing intended security controls in MinIO object storage.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"minio","vendor":"minio"}],"cvss":{"score":7.1,"severity":"high","source":"cna","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","version":"4.0"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"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.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"MinIO is Vulnerable to SSE Metadata Injection via Replication Headers","id":"CVE-2026-34204","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":3,"n_references":1,"next":{"headline":"Home Assistant: Unauthenticated App (Add-on) Endpoints Exposed to Local Network via Host Network Mode","id":"CVE-2026-34205"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0.0.0-20240328174456-468a9fae83e9"],"last_affected":[],"package":"github.com/minio/minio","purl":"pkg:golang/github.com/minio/minio","source":"GO-2026-4896"},{"ecosystem":"Go","fixed":[],"introduced":["0.0.0-20240328174456-468a9fae83e9"],"last_affected":["0.0.0-20260212201848-7aac2a2c5b7c"],"package":"github.com/minio/minio","purl":null,"source":"GHSA-3rh2-v3gr-35p9"},{"ecosystem":"Go","fixed":[],"introduced":["0.0.0-20240328174456-468a9fae83e9"],"last_affected":["0.0.0-20260212201848-7aac2a2c5b7c"],"package":"github.com/minio/minio","purl":"pkg:golang/github.com/minio/minio","source":"GHSA-3rh2-v3gr-35p9"}],"prev":{"headline":"Nautobot: Management of users via REST API does not apply configured password validators","id":"CVE-2026-34203"},"products":["minio"],"published":"2026-03-31","related":[{"cvss_score":8.8,"headline":"MinIO Security Feature Bypass","id":"CVE-2023-28434","kev_date_added":"2023-09-19","published":"2023-03-22"},{"cvss_score":7.5,"headline":"MinIO Information Disclosure","id":"CVE-2023-28432","kev_date_added":"2023-04-21","published":"2023-03-22"},{"cvss_score":9.3,"headline":"Authentication bypass MinIO Admin API","id":"CVE-2020-11012","kev_date_added":null,"published":"2020-04-23"},{"cvss_score":9.2,"headline":"MinIO: JWT Algorithm Confusion in OIDC Authentication","id":"CVE-2026-33322","kev_date_added":null,"published":"2026-03-24"},{"cvss_score":9.1,"headline":"MinIO: LDAP login brute-force via user enumeration and missing rate limit","id":"CVE-2026-33419","kev_date_added":null,"published":"2026-03-24"},{"cvss_score":8.8,"headline":"MinIO has an Unauthenticated Object Write via Missing Signature Verification in Unsigned-Trailer Uploads","id":"CVE-2026-40344","kev_date_added":null,"published":"2026-04-22"},{"cvss_score":8.8,"headline":"MinIO has an Unauthenticated Object Write via Query-String Credential Signature Bypass in Unsigned-Trailer Uploads","id":"CVE-2026-41145","kev_date_added":null,"published":"2026-04-22"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-01","vendors":["minio"]},"summary":"Authenticated users can inject server-side encryption metadata via replication headers, bypassing intended security controls in MinIO object storage.","url":"https://insights.sbomify.com/CVE-2026-34204/"}