# CVE-2023-28434: MinIO is vulnerable to privilege escalation on Linux/MacOS

> CVE-2023-28434: MinIO is vulnerable to privilege escalation on Linux/MacOS. CVSS 8.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2023-28434
Last updated: 2025-10-21T23:15:22Z

- Published: 2023-03-22 20:44 UTC · Updated: 2025-10-21 23:15 UTC · Assigner: GitHub\_M
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 7.9%, 95th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2023-09-19, federal due date 2023-10-10, ransomware use: Unknown
- CWE: CWE-269

## 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\`.

## CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

## Affected vendors and products

- minio: minio

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2023-28434)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2023-28434)
- [https://github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda38355a010dfca5](https://github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda38355a010dfca5)
- [https://github.com/minio/minio/pull/16849](https://github.com/minio/minio/pull/16849)
- [https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c](https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2023-28434 · Markdown: https://rewindex.com/cve/CVE-2023-28434.md · JSON: https://rewindex.com/api/v1/cves/CVE-2023-28434 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:11:25.888Z