CVE-2023-28434
MinIO is vulnerable to privilege escalation on Linux/MacOS
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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`.
| CWE | CWE-269 |
| Vendor | minio |
| Product | minio |
| Published | Mar 22, 2023 |
| Last Updated | Oct 21, 2025 |
⚠️ Actively Exploited — Act Now
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
minio / minio
< RELEASE.2023-03-20T20-16-18Z
References
github.com: https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c github.com: https://github.com/minio/minio/pull/16849 github.com: https://github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda38355a010dfca5 cisa.gov: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28434