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CVE-2026-86600
Published:September 08, 2026
Updated:September 22, 2026
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.
Affected Packages
snowflake-connector-python (CONDA):
Affected version(s) >=3.14.1 <4.7.3
Fix Suggestion:
Update to version 4.7.3
Snowflake.Data (DOT_NET):
Affected version(s) >=4.7.0 <6.1.0
Fix Suggestion:
Update to version 6.1.0
https://github.com/snowflakedb/pdo_snowflake.git (GITHUB):
Affected version(s) >=v3.6.0 <v4.2.0
Fix Suggestion:
Update to version v4.2.0
https://github.com/snowflakedb/snowflake-connector-net.git (GITHUB):
Affected version(s) >=v4.7.0 <v6.1.0
Fix Suggestion:
Update to version v6.1.0
https://github.com/snowflakedb/snowflake-connector-nodejs.git (GITHUB):
Affected version(s) >=v2.1.1 <v3.3.0
Fix Suggestion:
Update to version v3.3.0
https://github.com/snowflakedb/snowflake-jdbc.git (GITHUB):
Affected version(s) >=v3.24.0 <v4.3.4
Fix Suggestion:
Update to version v4.3.4
https://github.com/snowflakedb/libsnowflakeclient.git (GITHUB):
Affected version(s) >=v2.2.0 <v2.10.0
Fix Suggestion:
Update to version v2.10.0
https://github.com/snowflakedb/snowflake-connector-python.git (GITHUB):
Affected version(s) >=v3.14.1 <v4.7.3
Fix Suggestion:
Update to version v4.7.3
https://github.com/snowflakedb/gosnowflake.git (GITHUB):
Affected version(s) >=v2.0.0 <v2.2.0
Fix Suggestion:
Update to version v2.2.0
github.com/snowflakedb/gosnowflake/v2 (GO):
Affected version(s) >=v2.0.0 <v2.2.0
Fix Suggestion:
Update to version v2.2.0
net.snowflake:snowflake-jdbc-thin (JAVA):
Affected version(s) >=3.24.0 <4.3.4
Fix Suggestion:
Update to version 4.3.4
net.snowflake:snowflake-jdbc-fips (JAVA):
Affected version(s) >=3.24.0 <4.3.4
Fix Suggestion:
Update to version 4.3.4
net.snowflake:snowflake-jdbc (JAVA):
Affected version(s) >=3.24.0 <4.3.4
Fix Suggestion:
Update to version 4.3.4
snowflake-sdk (NPM):
Affected version(s) >=2.1.1 <3.3.0
Fix Suggestion:
Update to version 3.3.0
snowflake.data (NUGET):
Affected version(s) >=4.7.0 <6.1.0
Fix Suggestion:
Update to version 6.1.0
snowflake-connector-python (PYTHON):
Affected version(s) >=3.14.1 <4.7.3
Fix Suggestion:
Update to version 4.7.3
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CVSS v4
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Insufficiently Protected Credentials
Unintended Proxy or Intermediary ('Confused Deputy')
EPSS
Base Score:
0.31