VULNERABILITY INTELLIGENCE

CVE-2023-28434

CVSS score8.8 HIGH

EPSS probability7.92%

CISA KEVKnown exploited vulnerability

Published2023-03-22

Last modified2026-06-17

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

Known Exploited Vulnerability

MinIO Security Feature Bypass Vulnerability

Vendor / product: MinIO / MinIO

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`.

Weakness classification

security-advisories@github.com: CWE-269
nvd@nist.gov: NVD-CWE-noinfo

Primary references

security-advisories@github.com — Patch
security-advisories@github.com — Exploit, Issue Tracking
security-advisories@github.com — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0 — US Government Resource