# CVE-2023-28434

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`.

- Page: https://www.vulneraibility.com/cve/CVE-2023-28434
- CVSS: 8.8
- Known exploited: yes, in CISA KEV since 2023-09-19; CISA due date 2023-10-10
- EPSS: 7.92% (percentile 94.8)
- Unvetted proof-of-concept code on GitHub: 1 GitHub proof of concept (first 2023-03-27)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-01-28)
- Weakness: CWE-269
- Also known as: GHSA-2pxw-r47w-4p8c
- Published: 2023-03-22

## Affected

- minio:minio

## References

- [other] https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c
- [other] https://github.com/minio/minio/pull/16849
- [other] https://github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda38355a010dfca5
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28434

---
Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.