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Description

MinIO is a high-performance object storage system. From RELEASE.2022-11-08T05-27-07Z to before RELEASE.2026-03-17T21-25-16Z, a JWT algorithm confusion vulnerability in MinIO's OpenID Connect authentication allows an attacker who knows the OIDC ClientSecret to forge arbitrary identity tokens and obtain S3 credentials with any policy, including consoleAdmin. This issue has been patched in RELEASE.2026-03-17T21-25-16Z.

PUBLISHED Reserved 2026-03-18 | Published 2026-03-24 | Updated 2026-03-25 | Assigner GitHub_M




CRITICAL: 9.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-287: Improper Authentication

Product status

>= RELEASE.2022-11-08T05-27-07Z, < RELEASE.2026-03-17T21-25-16Z
affected

References

github.com/.../minio/security/advisories/GHSA-5cx5-wh4m-82fh

cve.org (CVE-2026-33322)

nvd.nist.gov (CVE-2026-33322)

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