Common Weakness Enumeration

CWE-306

Allowed

Missing Authentication for Critical Function

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

4998 vulnerabilities reference this CWE, most recent first.

GHSA-995F-8QGF-H52P

Vulnerability from github – Published: 2026-07-23 12:32 – Updated: 2026-07-23 12:32
VLAI
Details

In JetBrains IntelliJ IDEA before 2026.2 unauthorized input injection was possible in a Remote Development session

Severity
10.0 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-64812"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-23T12:18:36Z",
    "severity": "CRITICAL"
  },
  "details": "In JetBrains IntelliJ IDEA before 2026.2 unauthorized input injection was possible in a Remote Development session",
  "id": "GHSA-995f-8qgf-h52p",
  "modified": "2026-07-23T12:32:26Z",
  "published": "2026-07-23T12:32:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64812"
    },
    {
      "type": "WEB",
      "url": "https://www.jetbrains.com/privacy-security/issues-fixed"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-995X-6XMG-8XWR

Vulnerability from github – Published: 2026-09-23 15:30 – Updated: 2026-09-23 15:30
VLAI
Details

Dell Secure Connect Gateway (SCG) Policy Manager, versions prior to 5.34.00.16, contains a Missing Authentication for Critical Function vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Unauthorized access.

Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-73588"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-23T15:17:17Z",
    "severity": "HIGH"
  },
  "details": "Dell Secure Connect Gateway (SCG) Policy Manager, versions prior to 5.34.00.16, contains a Missing Authentication for Critical Function vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Unauthorized access.",
  "id": "GHSA-995x-6xmg-8xwr",
  "modified": "2026-09-23T15:30:49Z",
  "published": "2026-09-23T15:30:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73588"
    },
    {
      "type": "WEB",
      "url": "https://www.dell.com/support/kbdoc/en-ca/000503592/dsa-2026-385-security-update-for-dell-secure-connect-gateway-policy-manager-multiple-vulnerabilities?msockid=3021cac2195069ed3194ddad186a68f9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-99GV-MW3C-HP42

Vulnerability from github – Published: 2026-01-15 21:31 – Updated: 2026-01-15 21:31
VLAI
Details

Entrust Instant Financial Issuance (IFI) On Premise software (formerly referred to as CardWizard) versions 5.x, prior to 6.10.5, and prior to 6.11.1 contain an insecure .NET Remoting exposure in the SmartCardController service (DCG.SmartCardControllerService.exe). The service registers a TCP remoting channel with unsafe formatter/settings that permit untrusted remoting object invocation. A remote, unauthenticated attacker who can reach the remoting port can invoke exposed remoting objects to read arbitrary files from the server and coerce outbound authentication, and may achieve arbitrary file write and remote code execution via known .NET Remoting exploitation techniques. This can lead to disclosure of sensitive installation and service-account data and compromise of the affected host.

Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-23746"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-15T20:16:05Z",
    "severity": "CRITICAL"
  },
  "details": "Entrust Instant Financial Issuance (IFI) On Premise software (formerly referred to as CardWizard) versions 5.x, prior to 6.10.5, and prior to 6.11.1 contain an insecure .NET Remoting exposure in the SmartCardController service (DCG.SmartCardControllerService.exe). The service registers a TCP remoting channel with unsafe formatter/settings that permit untrusted remoting object invocation. A remote, unauthenticated attacker who can reach the remoting port can invoke exposed remoting objects to read arbitrary files from the server and coerce outbound authentication, and may achieve arbitrary file write and remote code execution via known .NET Remoting exploitation techniques. This can lead to disclosure of sensitive installation and service-account data and compromise of the affected host.",
  "id": "GHSA-99gv-mw3c-hp42",
  "modified": "2026-01-15T21:31:47Z",
  "published": "2026-01-15T21:31:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23746"
    },
    {
      "type": "WEB",
      "url": "https://trustedcare.entrust.com/s/article/E26-001-NET-Remoting-Vulnerabilities-in-the-Smart-Card-Controller-Service-of-the-Instant-Financial-Issuance-On-Premise-Software"
    },
    {
      "type": "WEB",
      "url": "https://www.entrust.com/products/issuance-systems/instant/financial-card"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/entrust-ifi-smartcardcontroller-service-net-remoting-rce"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/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"
    }
  ]
}

GHSA-99H5-PJCV-GR6V

Vulnerability from github – Published: 2025-10-09 15:40 – Updated: 2025-12-09 16:24
VLAI
Summary
Better Auth: Unauthenticated API key creation through api-key plugin
Details

Summary

A critical authentication bypass was identified in the API key creation and update endpoints. An attacker could create or modify API keys for arbitrary users by supplying a victim’s user ID in the request body. Due to a flaw in how the authenticated user was derived, the endpoints could treat attacker-controlled input as an authenticated user object under certain conditions.

Details

The vulnerability originated from fallback logic used when determining the current user. When no session was present, the handler incorrectly allowed request-body data to populate the user context used for authorization decisions. Because server-side validation only executed when authentication was required, privileged fields were not properly protected. As a result, the API accepted unauthenticated requests that targeted other users.

This same pattern affected both the API key creation and update routes.

Impact

Unauthenticated attackers could generate or modify API keys belonging to any user. This granted full authenticated access as the targeted user and, depending on the user’s privileges, could lead to account compromise, access to sensitive data, or broader application takeover.

Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "better-auth"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.3.26"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-61928"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-285",
      "CWE-306"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-10-09T15:40:50Z",
    "nvd_published_at": "2025-10-09T22:15:32Z",
    "severity": "HIGH"
  },
  "details": "### **Summary**\n\nA critical authentication bypass was identified in the API key creation and update endpoints. An attacker could create or modify API keys for arbitrary users by supplying a victim\u2019s user ID in the request body. Due to a flaw in how the authenticated user was derived, the endpoints could treat attacker-controlled input as an authenticated user object under certain conditions.\n\n### **Details**\n\nThe vulnerability originated from fallback logic used when determining the current user. When no session was present, the handler incorrectly allowed request-body data to populate the user context used for authorization decisions. Because server-side validation only executed when authentication was required, privileged fields were not properly protected. As a result, the API accepted unauthenticated requests that targeted other users.\n\nThis same pattern affected both the API key creation and update routes.\n\n### **Impact**\n\nUnauthenticated attackers could generate or modify API keys belonging to any user. This granted full authenticated access as the targeted user and, depending on the user\u2019s privileges, could lead to account compromise, access to sensitive data, or broader application takeover.",
  "id": "GHSA-99h5-pjcv-gr6v",
  "modified": "2025-12-09T16:24:49Z",
  "published": "2025-10-09T15:40:50Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-99h5-pjcv-gr6v"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-61928"
    },
    {
      "type": "WEB",
      "url": "https://github.com/better-auth/better-auth/commit/556085067609c508f8c546ceef9003ee8c607d39"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/better-auth/better-auth"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Better Auth: Unauthenticated API key creation through api-key plugin"
}

GHSA-99J5-FVG3-54PM

Vulnerability from github – Published: 2022-10-20 12:00 – Updated: 2024-10-26 18:38
VLAI
Summary
Rdiffweb is missing authentication for critical function
Details

Missing Authentication for Critical Function in GitHub repository ikus060/rdiffweb prior to 2.5.0.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "rdiffweb"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.5.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-3327"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-10-20T18:40:19Z",
    "nvd_published_at": "2022-10-20T00:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "Missing Authentication for Critical Function in GitHub repository ikus060/rdiffweb prior to 2.5.0.",
  "id": "GHSA-99j5-fvg3-54pm",
  "modified": "2024-10-26T18:38:44Z",
  "published": "2022-10-20T12:00:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-3327"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ikus060/rdiffweb/commit/f2a32f2a9f3fb8be1a9432ac3d81d3aacdb13095"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ikus060/rdiffweb"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/rdiffweb/PYSEC-2022-42977.yaml"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/ikus-soft/rdiffweb#next-release-250"
    },
    {
      "type": "WEB",
      "url": "https://huntr.dev/bounties/02207c8f-2b15-4a31-a86a-74fd2fca0ed1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Rdiffweb is missing authentication for critical function"
}

GHSA-99MV-PFX6-V678

Vulnerability from github – Published: 2022-06-23 00:00 – Updated: 2022-07-01 00:01
VLAI
Details

An Uncontrolled Resource Consumption vulnerability in spacewalk-java of SUSE Manager Server 4.1, SUSE Manager Server 4.2 allows remote attackers to easily exhaust available disk resources leading to DoS. This issue affects: SUSE Manager Server 4.1 spacewalk-java versions prior to 4.1.46. SUSE Manager Server 4.2 spacewalk-java versions prior to 4.2.37.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2022-21952"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306",
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-06-22T10:15:00Z",
    "severity": "HIGH"
  },
  "details": "An Uncontrolled Resource Consumption vulnerability in spacewalk-java of SUSE Manager Server 4.1, SUSE Manager Server 4.2 allows remote attackers to easily exhaust available disk resources leading to DoS. This issue affects: SUSE Manager Server 4.1 spacewalk-java versions prior to 4.1.46. SUSE Manager Server 4.2 spacewalk-java versions prior to 4.2.37.",
  "id": "GHSA-99mv-pfx6-v678",
  "modified": "2022-07-01T00:01:14Z",
  "published": "2022-06-23T00:00:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-21952"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.suse.com/show_bug.cgi?id=1199512"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-99QH-3H9R-VQ6X

Vulnerability from github – Published: 2026-10-05 21:31 – Updated: 2026-10-05 21:31
VLAI
Details

A flaw was found in the maestro gRPC broker. This vulnerability allows a remote attacker, with a valid client certificate, to bypass authentication. This bypass enables the attacker to subscribe to other consumers' event streams, leading to unauthorized information disclosure, or to publish forged agent status, which can compromise data integrity.

Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-71297"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-05T20:17:25Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in the maestro gRPC broker. This vulnerability allows a remote attacker, with a valid client certificate, to bypass authentication. This bypass enables the attacker to subscribe to other consumers\u0027 event streams, leading to unauthorized information disclosure, or to publish forged agent status, which can compromise data integrity.",
  "id": "GHSA-99qh-3h9r-vq6x",
  "modified": "2026-10-05T21:31:37Z",
  "published": "2026-10-05T21:31:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-71297"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-71297"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2511518"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-99WF-56WQ-QM88

Vulnerability from github – Published: 2025-10-16 06:30 – Updated: 2025-10-16 06:30
VLAI
Details

HCL BigFix Modern Client Management (MCM) 3.3 and earlier is affected by improper access control. Unauthorized users can access a small subset of endpoint actions, potentially allowing access to select internal functions.

Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2025-0274"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-16T05:15:35Z",
    "severity": "MODERATE"
  },
  "details": "HCL BigFix Modern Client Management (MCM) 3.3 and earlier is affected by improper access control.  Unauthorized users can access a small subset of endpoint actions, potentially allowing access to select internal functions.",
  "id": "GHSA-99wf-56wq-qm88",
  "modified": "2025-10-16T06:30:24Z",
  "published": "2025-10-16T06:30:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-0274"
    },
    {
      "type": "WEB",
      "url": "https://support.hcl-software.com/csm?id=kb_article\u0026sysparm_article=KB0124512"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-9C23-PJXH-GRQQ

Vulnerability from github – Published: 2026-07-28 21:31 – Updated: 2026-07-28 21:31
VLAI
Details

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is affected by remote code execution with the collectiveController-1.0 feature enabled.

Severity
7.1 (High)
CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-14976"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-28T21:17:26Z",
    "severity": "HIGH"
  },
  "details": "IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is affected by remote code execution with the collectiveController-1.0 feature enabled.",
  "id": "GHSA-9c23-pjxh-grqq",
  "modified": "2026-07-28T21:31:34Z",
  "published": "2026-07-28T21:31:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-14976"
    },
    {
      "type": "WEB",
      "url": "https://www.ibm.com/support/pages/node/7281633"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-9C4Q-HQ6P-C237

Vulnerability from github – Published: 2026-04-14 00:04 – Updated: 2026-05-05 15:43
VLAI
Summary
MinIO has an Unauthenticated Object Write via Missing Signature Verification in Unsigned-Trailer Uploads
Details

Impact

Two authentication bypass vulnerabilities in MinIO's STREAMING-UNSIGNED-PAYLOAD-TRAILER code path allow any user who knows a valid access key to write arbitrary objects to any bucket without knowing the secret key or providing a valid cryptographic signature.

Any MinIO deployment is impacted. The attack requires only a valid access key (the well-known default minioadmin, or any key with WRITE permission on a bucket) and a target bucket name.

There are two vulnerabilities:

  1. Missing Signature Verification in PutObjectExtractHandler / Snowball (CWE-306)
  2. Signature Verification Bypass via Query-String Credentials (CWE-287)

Vulnerability 1 — Missing signature verification in PutObjectExtractHandler (Snowball)

When authTypeStreamingUnsignedTrailer support was added (commit 76913a9fd, PR #16484), the new auth type was handled in PutObjectHandler and PutObjectPartHandler but was never added to PutObjectExtractHandler. The snowball auto-extract handler's switch rAuthType block has no case for authTypeStreamingUnsignedTrailer, so execution falls through with zero signature verification. The isPutActionAllowed call before the switch extracts the access key and checks IAM permissions, but does not verify the cryptographic signature.

An attacker sends a PUT request with X-Amz-Content-Sha256: STREAMING-UNSIGNED-PAYLOAD-TRAILER, X-Amz-Meta-Snowball-Auto-Extract: true, and an Authorization header containing a valid access key with a completely fabricated signature. The request is accepted and the tar payload is extracted into the bucket.

Affected component: cmd/object-handlers.go, function PutObjectExtractHandler.

Vulnerability 2 — Signature verification bypass via query-string credentials

PutObjectHandler and PutObjectPartHandler call newUnsignedV4ChunkedReader with a signature verification gate based solely on the presence of the Authorization header:

newUnsignedV4ChunkedReader(r, true, r.Header.Get(xhttp.Authorization) != "")

Meanwhile, isPutActionAllowed extracts credentials from either the Authorization header or the X-Amz-Credential query parameter, and trusts whichever it finds. An attacker omits the Authorization header and supplies credentials exclusively via the query string. The signature gate evaluates to false, doesSignatureMatch is never called, and the request proceeds with the permissions of the impersonated access key.

Affected components: cmd/object-handlers.go (PutObjectHandler), cmd/object-multipart-handlers.go (PutObjectPartHandler).

CVSS v4.0 Score: 8.8 (High)

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

CWE: CWE-306 (Missing Authentication for Critical Function), CWE-287 (Improper Authentication)

Affected Versions

All MinIO releases through the final release of the minio/minio open-source project.

Both vulnerabilities were introduced in commit 76913a9fd ("Signed trailers for signature v4", PR #16484), which added authTypeStreamingUnsignedTrailer support. The first affected release is RELEASE.2023-05-18T00-05-36Z.

Patches

Fixed in: MinIO AIStor RELEASE.2026-04-11T03-20-12Z

Binary Downloads

Platform Architecture Download
Linux amd64 minio
Linux arm64 minio
macOS arm64 minio
macOS amd64 minio
Windows amd64 minio.exe

FIPS Binaries

Platform Architecture Download
Linux amd64 minio.fips
Linux arm64 minio.fips

Package Downloads

Format Architecture Download
DEB amd64 minio_20260411032012.0.0_amd64.deb
DEB arm64 minio_20260411032012.0.0_arm64.deb
RPM amd64 minio-20260411032012.0.0-1.x86_64.rpm
RPM arm64 minio-20260411032012.0.0-1.aarch64.rpm

Container Images

# Standard
docker pull quay.io/minio/aistor/minio:RELEASE.2026-04-11T03-20-12Z
podman pull quay.io/minio/aistor/minio:RELEASE.2026-04-11T03-20-12Z

# FIPS
docker pull quay.io/minio/aistor/minio:RELEASE.2026-04-11T03-20-12Z.fips
podman pull quay.io/minio/aistor/minio:RELEASE.2026-04-11T03-20-12Z.fips

Homebrew (macOS)

brew install minio/aistor/minio

Workarounds

If upgrading is not immediately possible:

  • Block unsigned-trailer requests at the load balancer. Reject any request containing X-Amz-Content-Sha256: STREAMING-UNSIGNED-PAYLOAD-TRAILER at the reverse proxy or WAF layer. Clients can use STREAMING-AWS4-HMAC-SHA256-PAYLOAD-TRAILER (the signed variant) instead.

  • Restrict WRITE permissions. Limit s3:PutObject grants to trusted principals. While this reduces the attack surface, it does not eliminate the vulnerability since any user with WRITE permission can exploit it with only their access key.

Credits

  • Finder: Arvin Shivram of Brutecat Security (@ddd)

References

Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/minio/minio"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-20230506025312-76913a9fd5c6"
            },
            {
              "last_affected": "0.0.0-20260212201848-7aac2a2c5b7c"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-40344"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287",
      "CWE-306"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-14T00:04:45Z",
    "nvd_published_at": "2026-04-22T01:16:05Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nTwo authentication bypass vulnerabilities in MinIO\u0027s `STREAMING-UNSIGNED-PAYLOAD-TRAILER` code path\nallow any user who knows a valid access key to write arbitrary objects to any bucket without knowing\nthe secret key or providing a valid cryptographic signature.\n\nAny MinIO deployment is impacted. The attack requires only a valid access key (the well-known default\n`minioadmin`, or any key with WRITE permission on a bucket) and a target bucket name.\n\nThere are two vulnerabilities:\n\n1. Missing Signature Verification in PutObjectExtractHandler / Snowball (CWE-306)\n2. Signature Verification Bypass via Query-String Credentials (CWE-287)\n\n**Vulnerability 1 \u2014 Missing signature verification in PutObjectExtractHandler (Snowball)**\n\nWhen `authTypeStreamingUnsignedTrailer` support was added (commit 76913a9fd, PR #16484), the new auth\ntype was handled in `PutObjectHandler` and `PutObjectPartHandler` but was never added to\n`PutObjectExtractHandler`. The snowball auto-extract handler\u0027s `switch rAuthType` block has no case for\n`authTypeStreamingUnsignedTrailer`, so execution falls through with zero signature verification. The\n`isPutActionAllowed` call before the switch extracts the access key and checks IAM permissions, but\ndoes not verify the cryptographic signature.\n\nAn attacker sends a PUT request with `X-Amz-Content-Sha256: STREAMING-UNSIGNED-PAYLOAD-TRAILER`,\n`X-Amz-Meta-Snowball-Auto-Extract: true`, and an `Authorization` header containing a valid access key\nwith a completely fabricated signature. The request is accepted and the tar payload is extracted into\nthe bucket.\n\n**Affected component:** `cmd/object-handlers.go`, function `PutObjectExtractHandler`.\n\n**Vulnerability 2 \u2014 Signature verification bypass via query-string credentials**\n\n`PutObjectHandler` and `PutObjectPartHandler` call `newUnsignedV4ChunkedReader` with a signature\nverification gate based solely on the presence of the `Authorization` header:\n\n```go\nnewUnsignedV4ChunkedReader(r, true, r.Header.Get(xhttp.Authorization) != \"\")\n```\n\nMeanwhile, `isPutActionAllowed` extracts credentials from either the `Authorization` header or the\n`X-Amz-Credential` query parameter, and trusts whichever it finds. An attacker omits the\n`Authorization` header and supplies credentials exclusively via the query string. The signature gate\nevaluates to `false`, `doesSignatureMatch` is never called, and the request proceeds with the\npermissions of the impersonated access key.\n\n**Affected components:** `cmd/object-handlers.go` (`PutObjectHandler`),\n`cmd/object-multipart-handlers.go` (`PutObjectPartHandler`).\n\n**CVSS v4.0 Score:** 8.8 (High)\n\n**Vector:** `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N`\n\n**CWE:** CWE-306 (Missing Authentication for Critical Function), CWE-287 (Improper Authentication)\n\n### Affected Versions\n\nAll MinIO releases through the final release of the minio/minio open-source project.\n\nBoth vulnerabilities were introduced in commit\n[`76913a9fd`](https://github.com/minio/minio/commit/76913a9fd5c6e5c2dbd4e8c7faf56ed9e9e24091)\n(\"Signed trailers for signature v4\", [PR #16484](https://github.com/minio/minio/pull/16484)),\nwhich added `authTypeStreamingUnsignedTrailer` support. The first affected release is\n`RELEASE.2023-05-18T00-05-36Z`.\n\n### Patches\n\n**Fixed in**: MinIO AIStor RELEASE.2026-04-11T03-20-12Z\n\n#### Binary Downloads\n\n| Platform | Architecture | Download                                                                    |\n| -------- | ------------ | --------------------------------------------------------------------------- |\n| Linux    | amd64        | [minio](https://dl.min.io/aistor/minio/release/linux-amd64/minio)           |\n| Linux    | arm64        | [minio](https://dl.min.io/aistor/minio/release/linux-arm64/minio)           |\n| macOS    | arm64        | [minio](https://dl.min.io/aistor/minio/release/darwin-arm64/minio)          |\n| macOS    | amd64        | [minio](https://dl.min.io/aistor/minio/release/darwin-amd64/minio)          |\n| Windows  | amd64        | [minio.exe](https://dl.min.io/aistor/minio/release/windows-amd64/minio.exe) |\n\n#### FIPS Binaries\n\n| Platform | Architecture | Download                                                                    |\n| -------- | ------------ | --------------------------------------------------------------------------- |\n| Linux    | amd64        | [minio.fips](https://dl.min.io/aistor/minio/release/linux-amd64/minio.fips) |\n| Linux    | arm64        | [minio.fips](https://dl.min.io/aistor/minio/release/linux-arm64/minio.fips) |\n\n#### Package Downloads\n\n| Format | Architecture | Download                                                                                                                            |\n| ------ | ------------ | ----------------------------------------------------------------------------------------------------------------------------------- |\n| DEB    | amd64        | [minio_20260411032012.0.0_amd64.deb](https://dl.min.io/aistor/minio/release/linux-amd64/minio_20260411032012.0.0_amd64.deb)         |\n| DEB    | arm64        | [minio_20260411032012.0.0_arm64.deb](https://dl.min.io/aistor/minio/release/linux-arm64/minio_20260411032012.0.0_arm64.deb)         |\n| RPM    | amd64        | [minio-20260411032012.0.0-1.x86_64.rpm](https://dl.min.io/aistor/minio/release/linux-amd64/minio-20260411032012.0.0-1.x86_64.rpm)   |\n| RPM    | arm64        | [minio-20260411032012.0.0-1.aarch64.rpm](https://dl.min.io/aistor/minio/release/linux-arm64/minio-20260411032012.0.0-1.aarch64.rpm) |\n\n#### Container Images\n\n```bash\n# Standard\ndocker pull quay.io/minio/aistor/minio:RELEASE.2026-04-11T03-20-12Z\npodman pull quay.io/minio/aistor/minio:RELEASE.2026-04-11T03-20-12Z\n\n# FIPS\ndocker pull quay.io/minio/aistor/minio:RELEASE.2026-04-11T03-20-12Z.fips\npodman pull quay.io/minio/aistor/minio:RELEASE.2026-04-11T03-20-12Z.fips\n```\n\n#### Homebrew (macOS)\n\n```bash\nbrew install minio/aistor/minio\n```\n\n### Workarounds\n\n- [Users of the open-source `minio/minio` project should upgrade to MinIO AIStor `RELEASE.2026-04-11T03-20-12Z` or later.](https://docs.min.io/enterprise/aistor-object-store/upgrade-aistor-server/community-edition/)\n\nIf upgrading is not immediately possible:\n\n- **Block unsigned-trailer requests at the load balancer.** Reject any request containing\n  `X-Amz-Content-Sha256: STREAMING-UNSIGNED-PAYLOAD-TRAILER` at the reverse proxy or WAF layer.\n  Clients can use `STREAMING-AWS4-HMAC-SHA256-PAYLOAD-TRAILER` (the signed variant) instead.\n\n- **Restrict WRITE permissions.** Limit `s3:PutObject` grants to trusted principals. While this\n  reduces the attack surface, it does not eliminate the vulnerability since any user with WRITE\n  permission can exploit it with only their access key.\n\n### Credits\n\n- **Finder:** Arvin Shivram of Brutecat Security ([@ddd](https://github.com/ddd))\n\n### References\n\n- Introducing commit: [`76913a9fd`](https://github.com/minio/minio/commit/76913a9fd5c6e5c2dbd4e8c7faf56ed9e9e24091) ([PR #16484](https://github.com/minio/minio/pull/16484))\n- [MinIO AIStor](https://min.io/aistor)",
  "id": "GHSA-9c4q-hq6p-c237",
  "modified": "2026-05-05T15:43:25Z",
  "published": "2026-04-14T00:04:45Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/minio/minio/security/advisories/GHSA-9c4q-hq6p-c237"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40344"
    },
    {
      "type": "WEB",
      "url": "https://github.com/minio/minio/pull/16484"
    },
    {
      "type": "WEB",
      "url": "https://github.com/minio/minio/commit/76913a9fd5c6e5c2dbd4e8c7faf56ed9e9e24091"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/minio/minio"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "MinIO has an Unauthenticated Object Write via Missing Signature Verification in Unsigned-Trailer Uploads"
}
Mitigation
Architecture and Design
  • Divide the software into anonymous, normal, privileged, and administrative areas. Identify which of these areas require a proven user identity, and use a centralized authentication capability.
  • Identify all potential communication channels, or other means of interaction with the software, to ensure that all channels are appropriately protected, including those channels that are assumed to be accessible only by authorized parties. Developers sometimes perform authentication at the primary channel, but open up a secondary channel that is assumed to be private. For example, a login mechanism may be listening on one network port, but after successful authentication, it may open up a second port where it waits for the connection, but avoids authentication because it assumes that only the authenticated party will connect to the port.
  • In general, if the software or protocol allows a single session or user state to persist across multiple connections or channels, authentication and appropriate credential management need to be used throughout.
Mitigation MIT-15
Architecture and Design

For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.

Mitigation
Architecture and Design
  • Where possible, avoid implementing custom, "grow-your-own" authentication routines and consider using authentication capabilities as provided by the surrounding framework, operating system, or environment. These capabilities may avoid common weaknesses that are unique to authentication; support automatic auditing and tracking; and make it easier to provide a clear separation between authentication tasks and authorization tasks.
  • In environments such as the World Wide Web, the line between authentication and authorization is sometimes blurred. If custom authentication routines are required instead of those provided by the server, then these routines must be applied to every single page, since these pages could be requested directly.
Mitigation MIT-4.5
Architecture and Design

Strategy: Libraries or Frameworks

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • For example, consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator [REF-45].
Mitigation
Implementation System Configuration Operation

When storing data in the cloud (e.g., S3 buckets, Azure blobs, Google Cloud Storage, etc.), use the provider's controls to require strong authentication for users who should be allowed to access the data [REF-1297] [REF-1298] [REF-1302].

CAPEC-12: Choosing Message Identifier

This pattern of attack is defined by the selection of messages distributed via multicast or public information channels that are intended for another client by determining the parameter value assigned to that client. This attack allows the adversary to gain access to potentially privileged information, and to possibly perpetrate other attacks through the distribution means by impersonation. If the channel/message being manipulated is an input rather than output mechanism for the system, (such as a command bus), this style of attack could be used to change the adversary's identifier to more a privileged one.

CAPEC-166: Force the System to Reset Values

An attacker forces the target into a previous state in order to leverage potential weaknesses in the target dependent upon a prior configuration or state-dependent factors. Even in cases where an attacker may not be able to directly control the configuration of the targeted application, they may be able to reset the configuration to a prior state since many applications implement reset functions.

CAPEC-216: Communication Channel Manipulation

An adversary manipulates a setting or parameter on communications channel in order to compromise its security. This can result in information exposure, insertion/removal of information from the communications stream, and/or potentially system compromise.

CAPEC-36: Using Unpublished Interfaces or Functionality

An adversary searches for and invokes interfaces or functionality that the target system designers did not intend to be publicly available. If interfaces fail to authenticate requests, the attacker may be able to invoke functionality they are not authorized for.

CAPEC-62: Cross Site Request Forgery

An attacker crafts malicious web links and distributes them (via web pages, email, etc.), typically in a targeted manner, hoping to induce users to click on the link and execute the malicious action against some third-party application. If successful, the action embedded in the malicious link will be processed and accepted by the targeted application with the users' privilege level. This type of attack leverages the persistence and implicit trust placed in user session cookies by many web applications today. In such an architecture, once the user authenticates to an application and a session cookie is created on the user's system, all following transactions for that session are authenticated using that cookie including potential actions initiated by an attacker and simply "riding" the existing session cookie.

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