CVE-2023-28434βMinIO Security Feature Bypass Vulnerability
PUBLISHEDvulnerability record
2023-09-19 Β· last modified June 21, 2025
Metadata
Vulnerability Name
MinIO Security Feature Bypass Vulnerability
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.
Known To Be Used in Ransomware Campaigns?
Action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.