CVE-2026-33322
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Minio
PublishedMar 24, 2026
First seenMar 24, 2026
Weakness typeCWE-287Improper authentication
How to fix
Update
- minio minio2026-03-17t21-25-16z or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| minio minio | 2022-11-08t05-27-07z ≤ v < 2026-03-17t21-25-16z | 2026-03-17t21-25-16z |
| github.com/minio/minioGo | v ≤ 0.0.0-20260212201848-7aac2a2c5b7c, No range specified | — |
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