---
title: "CVE-2023-28434: MinIO is vulnerable to privilege… | CubePath"
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…"
language: en
source: https://cubepath.com/security/cve/CVE-2023-28434
---

# CVE-2023-28434: MinIO is vulnerable to privilege… | CubePath

## 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\`.

Official description from the CVE record, published by GitHub\_M. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2023-28434)

## Key data

### CVSS 3.1 High 8.8

Score published by GitHub\_M in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

| Metric                 | Value     | What it means                                                                       |
| ---------------------- | --------- | ----------------------------------------------------------------------------------- |
| Attack vector          | Network   | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity      | Low       | No special conditions are needed. The attack can be repeated at will.               |
| Privileges required    | Low       | A basic user account is needed.                                                     |
| User interaction       | None      | No action from any user is needed.                                                  |
| Scope                  | Unchanged | The impact stays within the vulnerable component.                                   |
| Confidentiality impact | High      | Serious or total effect on the secrecy of data.                                     |
| Integrity impact       | High      | Serious or total effect on the trustworthiness of data.                             |
| Availability impact    | High      | Serious or total effect on availability.                                            |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.07917 (7.9% probability)

Percentile

94.8%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.

Name in the catalog

MinIO Security Feature Bypass Vulnerability

Added to the catalog

Sep 19, 2023

Federal due date

Oct 10, 2023

### CISA assessment as of Jan 28, 2025

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation

Recorded by CISA as active

Automatable

no

Technical impact

total

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-269](https://cwe.mitre.org/data/definitions/269.html) Improper Privilege Management

## Affected products

Products listed in the CVE record, as the CNA published them.

- minio

  - affected: < RELEASE.2023-03-20T20-16-18Z

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4…](https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c)
- [github.com/minio/minio/pull/16849](https://github.com/minio/minio/pull/16849)
- [github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda383…](https://github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda38355a010dfca5)

## Timeline

1. ID reserved Mar 15, 2023
2. Record published Mar 22, 2023
3. Added to CISA KEV Sep 19, 2023
4. Record last updated Oct 21, 2025

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:24 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)