CRITICALCVE-2026-33322Published Modified CNA GitHub_M
CVE-2026-33322: MinIO: JWT Algorithm Confusion in OIDC Authentication
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.
Metrics
- CVSS v4.0
- 9.2
- Severity
- CRITICAL
- Fixed in
- —
- Affected Products
- 1
Affected packages
- minio / minio>= RELEASE.2022-11-08T05-27-07Z, < RELEASE.2026-03-17T21-25-16Z
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N