{"cve":"CVE-2026-33322","nvd":{"published":"2026-03-24T20:16:27.857","modified":"2026-06-17T10:37:19.350","status":"Analyzed","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.","cvss_v4":{"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","score":9.2},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-287"],"references":["https://github.com/minio/minio/security/advisories/GHSA-5cx5-wh4m-82fh"],"products":["minio:minio"],"source":"nvd","synced_at":"2026-10-19T22:26:19.218427112+00:00"},"epss":{"cve":"CVE-2026-33322","score":0.00425,"percentile":0.36858,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5cx5-wh4m-82fh","url":"https://osv.dev/vulnerability/GHSA-5cx5-wh4m-82fh","summary":"MinIO has JWT Algorithm Confusion in OIDC Authentication","modified":"2026-10-08T08:11:02.122364367Z","packages":[{"ecosystem":"Go","name":"github.com/minio/minio","purl":"pkg:golang/github.com/minio/minio","ranges":["<=0.0.0-20260212201848-7aac2a2c5b7c"],"fixed":[]}]},{"id":"GO-2026-4779","url":"https://osv.dev/vulnerability/GO-2026-4779","summary":"MinIO has JWT Algorithm Confusion in OIDC Authentication in github.com/minio/minio","modified":"2026-10-08T08:11:02.122364367Z","packages":[{"ecosystem":"Go","name":"github.com/minio/minio","purl":"pkg:golang/github.com/minio/minio","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}