Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-03-27 07:07

Modified

2026-03-27 07:40

Summary

MinIO: JWT Algorithm Confusion in OIDC Authentication

Details

MinIO is a high-performance object storage system. From 2022.11.08 to before 2026.03.17, 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 2026.03.17.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "minio",
        "purl": "pkg:bitnami/minio"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2022.11.08"
            },
            {
              "fixed": "2026.03.17"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "type": "CVSS_V4"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-33322"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:minio:minio:*:*:*:*:*:go:*:*"
    ],
    "severity": "Critical"
  },
  "details": "MinIO is a high-performance object storage system. From 2022.11.08 to before 2026.03.17, a JWT algorithm confusion vulnerability in MinIO\u0027s 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 2026.03.17.",
  "id": "BIT-minio-2026-33322",
  "modified": "2026-03-27T07:40:55.991Z",
  "published": "2026-03-27T07:07:59.802Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/minio/minio/security/advisories/GHSA-5cx5-wh4m-82fh"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33322"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "MinIO: JWT Algorithm Confusion in OIDC Authentication"
}

CVE-2026-33322 (GCVE-0-2026-33322)

Vulnerability from cvelistv5 – Published: 2026-03-24 19:05 – Updated: 2026-03-25 14:28

Title

MinIO: JWT Algorithm Confusion in OIDC Authentication

Summary

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.

Severity ?

9.2 (Critical)


                        
                          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

CWE

CWE-287 - Improper Authentication

Assigner

GitHub_M

References

URL

Tags

https://github.com/minio/minio/security/advisorie…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	minio	minio	Affected: >= RELEASE.2022-11-08T05-27-07Z, < RELEASE.2026-03-17T21-25-16Z

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-33322",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-25T14:00:14.071665Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-25T14:28:14.561Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "minio",
          "vendor": "minio",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= RELEASE.2022-11-08T05-27-07Z, \u003c RELEASE.2026-03-17T21-25-16Z"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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\u0027s 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": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 9.2,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287: Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-24T19:05:04.705Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/minio/minio/security/advisories/GHSA-5cx5-wh4m-82fh",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/minio/minio/security/advisories/GHSA-5cx5-wh4m-82fh"
        }
      ],
      "source": {
        "advisory": "GHSA-5cx5-wh4m-82fh",
        "discovery": "UNKNOWN"
      },
      "title": "MinIO: JWT Algorithm Confusion in OIDC Authentication"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-33322",
    "datePublished": "2026-03-24T19:05:04.705Z",
    "dateReserved": "2026-03-18T21:23:36.677Z",
    "dateUpdated": "2026-03-25T14:28:14.561Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

Vulnerability from bitnami_vulndb

CVE-2026-33322 (GCVE-0-2026-33322)

Tags

Sightings

Nomenclature