September 19, 2023 · Applied Cybernetics Group
CVE-2023-28434 MinIO MinIO
MinIO Security Feature Bypass Vulnerability
- Added to KEV
2023-09-19- Federal due date
2023-10-10- Vendor
- MinIO
- Product
- MinIO
- EPSS
- 94.7th percentile (score 0.079, as of
2026-11-06) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2023-28434
CISA short description
MinIO contains a security feature bypass vulnerability that allows an attacker to use crafted requests to bypass metadata bucket name checking and put an object into any bucket while processing `PostPolicyBucket` to conduct privilege escalation. To carry out this attack, the attacker requires credentials with `arn:aws:s3:::*` permission, as well as enabled Console API access.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.