---
id: CVE-2026-86600
title: >-
  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
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 …
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N'
cwe:
  - CWE-441
  - CWE-522
vendor: Snowflake
product: snowflake-connector-python
affected:
  - snowflake-connector-python >= 3.14.1 < 4.7.3
  - github.com/snowflakedb/gosnowflake >= 1.15.0 <= 1.19.1
  - github.com/snowflakedb/gosnowflake/v2 >= 2.0.0 < 2.2.0
  - 'net.snowflake:snowflake-jdbc >= 3.24.0 < 4.3.4'
  - 'net.snowflake:snowflake-jdbc-fips >= 3.24.0 < 4.3.4'
  - 'net.snowflake:snowflake-jdbc-thin >= 3.24.0 < 4.3.4'
  - snowflake-sdk >= 2.1.1 < 3.3.0
  - Snowflake.Data >= 4.7.0 < 6.1.0
  - odbc_driver >= 3.9.0 < 3.20.0
  - php_pdo_driver >= 3.6.0 < 4.2.0
  - libsnowflakeclient >= 2.2.0 < 2.10.0
published: '2026-09-08'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T16:18:03.310'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86600'
references:
  - url: >-
      https://docs.snowflake.com/en/release-notes/clients-drivers/dotnet-2026#version-610-september-3-2026
    label: 412d305a-227d-44f9-a262-a31ba44f2aea
  - url: >-
      https://docs.snowflake.com/en/release-notes/clients-drivers/golang-2026#version-220-sep-03-2026
    label: 412d305a-227d-44f9-a262-a31ba44f2aea
  - url: >-
      https://docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026#version-434-sep-03-2026
    label: 412d305a-227d-44f9-a262-a31ba44f2aea
  - url: >-
      https://docs.snowflake.com/en/release-notes/clients-drivers/nodejs-2026#version-330-september-3-2026
    label: 412d305a-227d-44f9-a262-a31ba44f2aea
  - url: >-
      https://docs.snowflake.com/en/release-notes/clients-drivers/odbc-2026#version-3200-sep-3-2026
    label: 412d305a-227d-44f9-a262-a31ba44f2aea
  - url: >-
      https://docs.snowflake.com/en/release-notes/clients-drivers/php-pdo-2026#version-420-sep-3-2026
    label: 412d305a-227d-44f9-a262-a31ba44f2aea
  - url: 'https://github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.10.0'
    label: 412d305a-227d-44f9-a262-a31ba44f2aea
  - url: >-
      https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.7.3
    label: 412d305a-227d-44f9-a262-a31ba44f2aea
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-08T18:03:59.388056Z'
epss: 0.00511
epssPercentile: 0.41106
ingestedAt: '2026-09-08T16:34:19.228Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.