Skip to main content
cve.nowby Sazabi
← All vulnerabilities
CVE-2026-86600

Workload identity attestation generated before login host validation in Snowflake drivers

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.7.3, 2.2.0, 4.3.4, 3.3.0, 6.1.0, and 3 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • snowflake-connector-python

    From 3.14.1 · fixed in 4.7.3

  • github.com/snowflakedb/gosnowflake

    From 1.15.0 · through 1.19.1

  • github.com/snowflakedb/gosnowflake/v2

    From 2.0.0 · fixed in 2.2.0

  • net.snowflake:snowflake-jdbc

    From 3.24.0 · fixed in 4.3.4

  • net.snowflake:snowflake-jdbc-fips

    From 3.24.0 · fixed in 4.3.4

  • net.snowflake:snowflake-jdbc-thin

    From 3.24.0 · fixed in 4.3.4

  • snowflake-sdk

    From 2.1.1 · fixed in 3.3.0

  • Snowflake.Data

    From 4.7.0 · fixed in 6.1.0

  • Snowflake Snowflake ODBC Driver

    From 3.9.0 · fixed in 3.20.0

  • Snowflake Snowflake PHP PDO Driver

    From 3.6.0 · fixed in 4.2.0

  • Snowflake Snowflake Libsnowflakeclient

    From 2.2.0 · fixed in 2.10.0

References 8

GitHub · snowflakedb/snowflake-connector-python

docs.snowflake.com

GitHub · snowflakedb/libsnowflakeclient