SARA / Free Tools / CVE / CVE-2023-28434

CVE-2023-28434 — MinIO Security Feature Bypass Vulnerability

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 requi

CVSS
8.8 HIGH
EPSS
39.03% (top 2.80%)
CWE
CWE-269
Published
2023-03-22T20:44:04.216Z
Last modified
2025-10-21T23:15:22.302Z
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA KEV — Actively Exploited
Added to KEV
2023-09-19
BOD 22-01 due
2023-10-10
Ransomware use
Unknown

01What is this vulnerability?

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…

02Affected products

VendorProductVersions
miniominio< RELEASE.2023-03-20T20-16-18Z

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2023-09-19. Ransomware use: Unknown.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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