CVE-2023-28434

8.8 HIGH CISA KEV - Actively Exploited
Published: March 22, 2023 Modified: October 24, 2025

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`.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/minio/minio/pull/16849
Source: security-advisories@github.com
Exploit Issue Tracking
https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c
Source: security-advisories@github.com
Vendor Advisory
https://github.com/minio/minio/pull/16849
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Issue Tracking
https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28434
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

7 reference(s) from NVD

Quick Stats

CVSS v3 Score
8.8 / 10.0
EPSS (Exploit Probability)
46.0%
98th percentile
Exploitation Status
Actively Exploited
Remediation due: 2023-10-10

Weaknesses (CWE)

Affected Vendors

minio