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    2 vulnerabilities found for Snowflake Connector for .NET by Snowflake

    CVE-2026-86600 (GCVE-0-2026-86600)

    Vulnerability from nvd – Published: 2026-09-08 15:48 – Updated: 2026-09-08 15:48
    VLAI
    Title
    Workload identity attestation generated before login host validation in Snowflake drivers
    Summary
    In affected Snowflake drivers, WORKLOAD_IDENTITY authentication requests a cloud workload-identity token and attaches it to the login request without verifying that the configured host is a Snowflake endpoint. An attacker who can modify the connection configuration can cause the driver to mint a fresh attestation and send it to a host they control. The captured token can be replayed to Snowflake for its remaining lifetime in accounts where that workload identity is already registered. On Azure, the token audience is also taken from connection configuration. Combined with an attacker-controlled host, the driver can request a Managed Identity access token scoped to a non-Snowflake Azure resource and deliver it to the attacker. That path is the only case in which impact extends beyond Snowflake; it is bounded by the token lifetime and the managed identity’s permissions. Successful exploitation requires WORKLOAD_IDENTITY authentication on a workload that already has an ambient cloud identity. Patched driver versions restrict this authenticator to recognized Snowflake hosts. Users must manually upgrade.
    Severity
    8.2 (High)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
    CWE
    • CWE-522 - Insufficiently Protected Credentials
    • CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake Connector for Python",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "4.7.3",
              "status": "affected",
              "version": "3.14.1",
              "versionType": "python"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake Go Driver",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "2.2.0",
              "status": "affected",
              "version": "1.15.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake JDBC Driver",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "4.3.4",
              "status": "affected",
              "version": "3.24.0",
              "versionType": "maven"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake Node.js Driver",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "3.3.0",
              "status": "affected",
              "version": "2.1.1",
              "versionType": "npm"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake Connector for .NET",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "6.1.0",
              "status": "affected",
              "version": "4.7.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake ODBC Driver",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "3.20.0",
              "status": "affected",
              "version": "3.9.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake PHP PDO Driver",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "4.2.0",
              "status": "affected",
              "version": "3.6.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake Libsnowflakeclient",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "2.10.0",
              "status": "affected",
              "version": "2.2.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In affected Snowflake drivers, WORKLOAD_IDENTITY authentication requests a cloud workload-identity token and attaches it to the login request without verifying that the configured host is a Snowflake endpoint. An attacker who can modify the connection configuration can cause the driver to mint a fresh attestation and send it to a host they control. The captured token can be replayed to Snowflake for its remaining lifetime in accounts where that workload identity is already registered. On Azure, the token audience is also taken from connection configuration. Combined with an attacker-controlled host, the driver can request a Managed Identity access token scoped to a non-Snowflake Azure resource and deliver it to the attacker. That path is the only case in which impact extends beyond Snowflake; it is bounded by the token lifetime and the managed identity\u2019s permissions. Successful exploitation requires WORKLOAD_IDENTITY authentication on a workload that already has an ambient cloud identity. Patched driver versions restrict this authenticator to recognized Snowflake hosts. Users must manually upgrade."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-522",
              "description": "Insufficiently Protected Credentials",
              "lang": "en",
              "type": "CWE"
            },
            {
              "cweId": "CWE-441",
              "description": "Unintended Proxy or Intermediary (\u0027Confused Deputy\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-08T15:48:45.858Z",
        "orgId": "412d305a-227d-44f9-a262-a31ba44f2aea",
        "shortName": "SNOWFLAKE"
      },
      "references": [
        {
          "name": "Snowflake Connector for Python Release Notes",
          "url": "https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.7.3"
        },
        {
          "name": "Snowflake Go Driver Release Notes",
          "url": "https://docs.snowflake.com/en/release-notes/clients-drivers/golang-2026#version-220-sep-03-2026"
        },
        {
          "name": "Snowflake JDBC Driver Release Notes",
          "url": "https://docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026#version-434-sep-03-2026"
        },
        {
          "name": "Snowflake Node.js Driver Release Notes",
          "url": "https://docs.snowflake.com/en/release-notes/clients-drivers/nodejs-2026#version-330-september-3-2026"
        },
        {
          "name": "Snowflake Connector for .NET Release Notes",
          "url": "https://docs.snowflake.com/en/release-notes/clients-drivers/dotnet-2026#version-610-september-3-2026"
        },
        {
          "name": "Snowflake ODBC Driver Release Notes",
          "url": "https://docs.snowflake.com/en/release-notes/clients-drivers/odbc-2026#version-3200-sep-3-2026"
        },
        {
          "name": "Snowflake PHP PDO Driver Release Notes",
          "url": "https://docs.snowflake.com/en/release-notes/clients-drivers/php-pdo-2026#version-420-sep-3-2026"
        },
        {
          "name": "Snowflake Libsnowflakeclient Release Notes",
          "url": "https://github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.10.0"
        }
      ],
      "title": "Workload identity attestation generated before login host validation in Snowflake drivers",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
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    "assignerShortName": "SNOWFLAKE",
    "cveId": "CVE-2026-86600",
    "datePublished": "2026-09-08T15:48:45.858Z",
    "dateReserved": "2026-09-08T08:32:19.278Z",
    "dateUpdated": "2026-09-08T15:48:45.858Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-86600 (GCVE-0-2026-86600)

    Vulnerability from cvelistv5 – Published: 2026-09-08 15:48 – Updated: 2026-09-08 15:48
    VLAI
    Title
    Workload identity attestation generated before login host validation in Snowflake drivers
    Summary
    In affected Snowflake drivers, WORKLOAD_IDENTITY authentication requests a cloud workload-identity token and attaches it to the login request without verifying that the configured host is a Snowflake endpoint. An attacker who can modify the connection configuration can cause the driver to mint a fresh attestation and send it to a host they control. The captured token can be replayed to Snowflake for its remaining lifetime in accounts where that workload identity is already registered. On Azure, the token audience is also taken from connection configuration. Combined with an attacker-controlled host, the driver can request a Managed Identity access token scoped to a non-Snowflake Azure resource and deliver it to the attacker. That path is the only case in which impact extends beyond Snowflake; it is bounded by the token lifetime and the managed identity’s permissions. Successful exploitation requires WORKLOAD_IDENTITY authentication on a workload that already has an ambient cloud identity. Patched driver versions restrict this authenticator to recognized Snowflake hosts. Users must manually upgrade.
    Severity
    8.2 (High)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
    CWE
    • CWE-522 - Insufficiently Protected Credentials
    • CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake Connector for Python",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "4.7.3",
              "status": "affected",
              "version": "3.14.1",
              "versionType": "python"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake Go Driver",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "2.2.0",
              "status": "affected",
              "version": "1.15.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake JDBC Driver",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "4.3.4",
              "status": "affected",
              "version": "3.24.0",
              "versionType": "maven"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake Node.js Driver",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "3.3.0",
              "status": "affected",
              "version": "2.1.1",
              "versionType": "npm"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake Connector for .NET",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "6.1.0",
              "status": "affected",
              "version": "4.7.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake ODBC Driver",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "3.20.0",
              "status": "affected",
              "version": "3.9.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake PHP PDO Driver",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "4.2.0",
              "status": "affected",
              "version": "3.6.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Snowflake Libsnowflakeclient",
          "vendor": "Snowflake",
          "versions": [
            {
              "lessThan": "2.10.0",
              "status": "affected",
              "version": "2.2.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In affected Snowflake drivers, WORKLOAD_IDENTITY authentication requests a cloud workload-identity token and attaches it to the login request without verifying that the configured host is a Snowflake endpoint. An attacker who can modify the connection configuration can cause the driver to mint a fresh attestation and send it to a host they control. The captured token can be replayed to Snowflake for its remaining lifetime in accounts where that workload identity is already registered. On Azure, the token audience is also taken from connection configuration. Combined with an attacker-controlled host, the driver can request a Managed Identity access token scoped to a non-Snowflake Azure resource and deliver it to the attacker. That path is the only case in which impact extends beyond Snowflake; it is bounded by the token lifetime and the managed identity\u2019s permissions. Successful exploitation requires WORKLOAD_IDENTITY authentication on a workload that already has an ambient cloud identity. Patched driver versions restrict this authenticator to recognized Snowflake hosts. Users must manually upgrade."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
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          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
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        {
          "descriptions": [
            {
              "cweId": "CWE-522",
              "description": "Insufficiently Protected Credentials",
              "lang": "en",
              "type": "CWE"
            },
            {
              "cweId": "CWE-441",
              "description": "Unintended Proxy or Intermediary (\u0027Confused Deputy\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
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          "name": "Snowflake Go Driver Release Notes",
          "url": "https://docs.snowflake.com/en/release-notes/clients-drivers/golang-2026#version-220-sep-03-2026"
        },
        {
          "name": "Snowflake JDBC Driver Release Notes",
          "url": "https://docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026#version-434-sep-03-2026"
        },
        {
          "name": "Snowflake Node.js Driver Release Notes",
          "url": "https://docs.snowflake.com/en/release-notes/clients-drivers/nodejs-2026#version-330-september-3-2026"
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        {
          "name": "Snowflake Connector for .NET Release Notes",
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          "name": "Snowflake ODBC Driver Release Notes",
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        },
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          "name": "Snowflake PHP PDO Driver Release Notes",
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