MinIO Security Feature Bypass Vulnerability

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• cpe minio/minioversion unspecified
• vendor MinIO MinIOversion unspecified

How to fix CVE-2023-28434

• Recommended remediation

  Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA due date Oct 10, 2023.

• Official advisories

  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • VulnCheck KEV · vulncheck.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Mar 22, 2023 · Catalog

   Detected

   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 . To carry out this attack, the attacker requires credentials with permission, as well as enabled Console API access. This issue has been patched in RELEASE.2023-03-20T20-16-18Z. As a

2. Sep 19, 2023 · CISA KEV

   Known exploited

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

3. Oct 10, 2023 · CISA KEV

   Remediation due

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

4. Jun 16, 2026 · Catalog

   Updated

   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 . To carry out this attack, the attacker requires credentials with permission, as well as enabled Console API access. This issue has been patched in RELEASE.2023-03-20T20-16-18Z. As a

Sources

• CISA KEVConfirmed exploitationCVE-2023-28434

  MinIO contains a security feature bypass vulnerability that allows an attacker to use crafted requests to bypass metadata bucket name checking and put an object into any bucket while processing to conduct privilege escalation. To carry out this attack, the attacker requires credentials with permission, as well as enabled Console API access.

  cisa.gov
• CVE.orgVulnerability recordCVE-2023-28434

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2023-28434

  30-day exploitation probability 7.9%

  first.org
• NIST NVDVulnerability recordCVE-2023-28434

  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 . To carry out this attack, the attacker requi

  nvd.nist.gov
• VulnCheck KEVConfirmed exploitationCVE-2023-28434

  MinIO contains a security feature bypass vulnerability that allows an attacker to use crafted requests to bypass metadata bucket name checking and put an object into any bucket while processing to conduct privilege escalation. To carry out this attack, the attacker requires crede

  vulncheck.com

References

• Patch · github.com
• Exploit · github.com
• CISA note · github.com
• CISA note · nvd.nist.gov
• US Government Resource · cisa.gov
• VulnCheck exploitation evidence · cisa.gov
• VulnCheck exploitation evidence · securityjoes.com

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.