CVE-2023-28434
minio
Published 22 Mar 2023 · updated 17 Jun 2026 · Analyzed
Exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on 19 Sept 2023, with a remediation deadline of 10 Oct 2023 for US federal agencies.
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Description
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`.
References
- github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda38355a010dfca5 · Patch
- github.com/minio/minio/pull/16849 · Exploit, Issue Tracking
- github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c · Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28434 · US Government Resource