Snowflake Connector for Python prior 4.7.3 Workload Identity improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00+

Summaryinfo

A vulnerability has been found in Snowflake Connector for Python, Go Driver, JDBC Driver, Node.js Driver, Connector for .NET, ODBC Driver, PHP PDO Driver and Libsnowflakeclient and classified as critical. Impacted is an unknown function of the component Workload Identity. The manipulation leads to improper authentication. This vulnerability is traded as CVE-2026-86600. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Snowflake Connector for Python, Go Driver, JDBC Driver, Node.js Driver, Connector for .NET, ODBC Driver, PHP PDO Driver and Libsnowflakeclient. This issue affects an unknown part of the component Workload Identity. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-86600 since 09/08/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 4.7.3 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.2
CNA Vector (SNOWFLAKE): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Connector for Python/Go Driver/JDBC Driver/Node.js Driver/Connector for .NET/ODBC Driver/PHP PDO Driver/Libsnowflakeclient 4.7.3

Timelineinfo

09/08/2026 Advisory disclosed
09/08/2026 +0 days CVE reserved
09/08/2026 +0 days VulDB entry created
09/08/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-86600 (🔒)
GCVE (CVE): GCVE-0-2026-86600
GCVE (VulDB): GCVE-100-399899

Entryinfo

Created: 09/08/2026 18:09
Changes: 09/08/2026 18:09 (64)
Complete: 🔍
Cache ID: 216::103

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