CVE-2026-34204 json
MinIO is Vulnerable to SSE Metadata Injection via Replication Headers
published 2026-03-27 7 mo ago modified 2026-10-08 32 d ago also EUVD-2026-17600 , GHSA-3rh2-v3gr-35p9 , GO-2026-4896
- cvss
- 7.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 2%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- minio minio release.2026-03-26t21-24-40z
- govulncheck-vulndb openSUSE Leap 15.6 0.0.20260402T184258-150000.1.158.1
suse advisories SUSE-SU-2026:1205-1
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.1 | 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 |
| GitHub | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H |
| CNA | 4.0 | 7.1 | 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 |
| NVD | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/minio/minio | >=0.0.0-20240328174456-468a9fae83e9, <=0.0.0-20260212201848-7aac2a2c5b7c >=0.0.0-20240328174456-468a9fae83e9 |
no fix listed |
Affected products
- minio minio
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
github.com
/minio/minio/security/advisories/GHSA-3rh2-v3gr-35p9
web, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-34204
advisory
-
docs.min.io
/enterprise/aistor-object-store/upgrade-aistor-server/community-edition
web
-
github.com
/minio/minio
package
Sources
- CVE List CVE-2026-34204
- GitHub Advisory GHSA-3rh2-v3gr-35p9
- NVD CVE-2026-34204
- OSV GO-2026-4896
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.