CVE-2023-28434
MinIO is vulnerable to privilege escalation on Linux/MacOS
KEVHIGH 8.8EPSS 7.9%
Minio is a Multi-Cloud Object Storage framework. Prior to RELEASE.2023-03-20T20-16-18Z, an attacker can use crafted requests to bypass metadata bucket name checking and put an object into any bucket while processing `PostPolicyBucket`. To carry out this attack, the attacker requires credentials with `arn:aws:s3:::*` permission, as well as enabled Console API access. This issue has been patched in RELEASE.2023-03-20T20-16-18Z. As a workaround, enable browser API access and turn off `MINIO_BROWSER=off`.
- Affected
- minio
- CVSS v3.1 NVD
- 8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS v3.1 GitHub
- 8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H - EPSS
- 7.92% chance of exploitation in the next 30 days, 95th percentile
- CISA KEV
- added 2023-09-19
- Published
- 2023-03-22
- Updated
- 2025-10-21
Proof-of-concept exploits (1)
- Mr-xn/CVE-2023-2843434★ · 2023-03-23
Security advisories
- minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c
- advisories/GHSA-2pxw-r47w-4p8c
- minio/minio/pull/16849