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.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| Snowflake | Snowflake Connector for Python | unaffected |
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| Snowflake | Snowflake Go Driver | unaffected |
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| Snowflake | Snowflake JDBC Driver | unaffected |
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| Snowflake | Snowflake Node.js Driver | unaffected |
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| Snowflake | Snowflake Connector for .NET | unaffected |
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| Snowflake | Snowflake ODBC Driver | unaffected |
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| Snowflake | Snowflake PHP PDO Driver | unaffected |
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| Snowflake | Snowflake Libsnowflakeclient | unaffected |
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References
History
Tue, 08 Sep 2026 16:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Workload identity attestation generated before login host validation in Snowflake drivers | |
| Weaknesses | CWE-441 CWE-522 |
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| Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: SNOWFLAKE
Published:
Updated: 2026-09-08T18:04:40.924Z
Reserved: 2026-09-08T08:32:19.278Z
Link: CVE-2026-86600
Vulnrichment
No data.
NVD
Status : Awaiting Analysis
Published: 2026-09-08T16:18:29.943
Modified: 2026-09-08T19:20:14.797
Link: CVE-2026-86600
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-09-08T19:00:13Z