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TI-2023-12977 Aliases CVE-2023-28433GHSA-w23q-4hw3-2pp6

Minio Privilege Escalation on Windows via Path separator manipulation

Priority MEDIUM 42CWE-668Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

Minio is a Multi-Cloud Object Storage framework. All users on Windows prior to version RELEASE.2023-03-20T20-16-18Z are impacted. MinIO fails to filter the `\` character, which allows for arbitrary object placement across buckets. As a result, a user with low privileges, such as an access key, service account, or STS credential, which only has permission to `PutObject` in a specific bucket, can create an admin user. This issue is patched in RELEASE.2023-03-20T20-16-18Z. There are no known workarounds.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00981 62nd percentileScored 2026-11-07
Fix Fixed github.com/minio/minio (Go): 0.0.0-202303200735

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MinIOminio< RELEASE.2023-03-20T20-16-18Z—No fix listedCNA
—github.com/minio/minio (Go)before 0.0.0-2023032007350.0.0-202303200735Patch availableGHSA-w23q-4hw3-2pp6
  • minio VendorMinIO Affected < RELEASE.2023-03-20T20-16-18Z Fixed in — No fix listed CNA
  • github.com/minio/minio (Go) Vendor— Affected before 0.0.0-202303200735 Fixed in 0.0.0-202303200735 Patch available GHSA-w23q-4hw3-2pp6

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:minio:minio:*:*:*:*:*:*:*:*before 2023-03-20t20-16-18zVulnerableMinIO
  • cpe:2.3:a:minio:minio:*:*:*:*:*:*:*:* Versions before 2023-03-20t20-16-18z Vulnerable ·MinIO

Remediation

  • Fix · GHSA-w23q-4hw3-2pp6 github.com/minio/minio (Go) Fixed in 0.0.0-202303200735 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-28433
  2. 2026-10-03 Alias added: GHSA-w23q-4hw3-2pp6

References

Patch 2

Advisory 2

Other 2

  • TI-2023-12978 MinIO is vulnerable to privilege escalation on Linux/MacOS KEVCVSS 3.1HIGH 8.8
  • TI-2023-12976 Minio Information Disclosure in Cluster Deployment KEVCVSS 3.1HIGH 7.5
  • TI-2023-11082 Allowed DELETE on resources on object locked buckets under Governance mode in Minio CVSS 3.1HIGH 8.8
  • TI-2024-16264 MinIO unsafe default: Access keys inherit `admin` of root user, allowing privilege escalation CVSS 3.1HIGH 8.8
  • TI-2022-08654 Improper Privilege Management in MinIO CVSS 3.1HIGH 8.8
  • TI-2022-13073 Possible DDOS by establishing keep-alive connections with anonymous HTTP clients in MinIO CVSS 3.1HIGH 7.5
See all 22 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences