CVE-2026-86600

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.

Affected Software

VendorProductVersion RangeStatus
SnowflakeSnowflake Connector for Python3.14.1 < 4.7.3affected
SnowflakeSnowflake Go Driver1.15.0 < 2.2.0affected
SnowflakeSnowflake JDBC Driver3.24.0 < 4.3.4affected
SnowflakeSnowflake Node.js Driver2.1.1 < 3.3.0affected
SnowflakeSnowflake Connector for .NET4.7.0 < 6.1.0affected
SnowflakeSnowflake ODBC Driver3.9.0 < 3.20.0affected
SnowflakeSnowflake PHP PDO Driver3.6.0 < 4.2.0affected
SnowflakeSnowflake Libsnowflakeclient2.2.0 < 2.10.0affected

Weaknesses

  • CWE-522: Insufficiently Protected Credentials
  • CWE-441: Unintended Proxy or Intermediary ('Confused Deputy')

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References