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  4. CVE 2026 86600 workload identity attestation generated before
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Back to active CVEs
High · CVSS 8.2CVE-2026-86600

Workload identity attestation generated before login host validation in Snowflake driversCVE-2026-86600

Answer in brief

CVE-2026-86600 records a High severity (CVSS 8.2) vulnerability in Workload identity attestation generated before login host validation in Snowflake drivers. The current sources do not mark it as known exploited. The current feed maps Snowflake/github.com/snowflakedb/gosnowflake (generic), Snowflake/github.com/snowflakedb/gosnowflake/v2 (generic), Snowflake/net.snowflake:snowflake-jdbc (generic), Snowflake/net.snowflake:snowflake-jdbc-fips (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 8, 2026Updated Sep 10, 2026Source checked Oct 25, 2026First seen by HOL Sep 8, 2026Material review Sep 10, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.2
Exploitation
Not marked as known exploited
Affected software
20 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 8.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Snowflake/github.com/snowflakedb/gosnowflake (generic), Snowflake/github.com/snowflakedb/gosnowflake/v2 (generic), Snowflake/net.snowflake:snowflake-jdbc (generic), Snowflake/net.snowflake:snowflake-jdbc-fips (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Snowflake/github.com/snowflakedb/gosnowflakegeneric>=1.15.0 <=1.19.1Not reported
Snowflake/github.com/snowflakedb/gosnowflake/v2generic>=2.0.0 <2.2.02.2.0
Snowflake/net.snowflake:snowflake-jdbcgeneric>=3.24.0 <4.3.44.3.4
Snowflake/net.snowflake:snowflake-jdbc-fipsgeneric>=3.24.0 <4.3.44.3.4
Snowflake/net.snowflake:snowflake-jdbc-thingeneric>=3.24.0 <4.3.44.3.4
Snowflake/Snowflake Connector for .NETgeneric>=4.7.0 <6.1.06.1.0
Snowflake/Snowflake Connector for Pythongeneric>=3.14.1 <4.7.34.7.3
Snowflake/snowflake-connector-pythongeneric>=3.14.1 <4.7.34.7.3
Snowflake/Snowflake.Datageneric>=4.7.0 <6.1.06.1.0
Snowflake/Snowflake Go Drivergeneric>=1.15.0 <2.2.02.2.0
Snowflake/Snowflake Go Drivergeneric1.15.0Not reported
Snowflake/Snowflake Go Drivergeneric>=2.0.0 <2.2.02.2.0
Snowflake/Snowflake JDBC Drivergeneric>=3.24.0 <4.3.44.3.4
Snowflake/Snowflake JDBC Driver (FIPS)generic>=3.24.0 <4.3.44.3.4
Snowflake/Snowflake JDBC Driver (Thin)generic>=3.24.0 <4.3.44.3.4
Snowflake/Snowflake Libsnowflakeclientgeneric>=2.2.0 <2.10.02.10.0
Snowflake/Snowflake Node.js Drivergeneric>=2.1.1 <3.3.03.3.0
Snowflake/Snowflake ODBC Drivergeneric>=3.9.0 <3.20.03.20.0
Snowflake/Snowflake PHP PDO Drivergeneric>=3.6.0 <4.2.04.2.0
Snowflake/snowflake-sdkgeneric>=2.1.1 <3.3.03.3.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Snowflake/github.com/snowflakedb/gosnowflake, Snowflake/github.com/snowflakedb/gosnowflake/v2, Snowflake/net.snowflake:snowflake-jdbc.
  2. 2Review the reported fix. Update Snowflake/github.com/snowflakedb/gosnowflake/v2 to 2.2.0; Snowflake/net.snowflake:snowflake-jdbc to 4.3.4; Snowflake/net.snowflake:snowflake-jdbc-fips to 4.3.4; Snowflake/net.snowflake:snowflake-jdbc-thin to 4.3.4; Snowflake/Snowflake Connector for .NET to 6.1.0; Snowflake/Snowflake Connector for Python to 4.7.3; Snowflake/snowflake-connector-python to 4.7.3; Snowflake/Snowflake.Data to 6.1.0; Snowflake/Snowflake Go Driver to 2.2.0; Snowflake/Snowflake Go Driver to 2.2.0; Snowflake/Snowflake JDBC Driver to 4.3.4; Snowflake/Snowflake JDBC Driver (FIPS) to 4.3.4; Snowflake/Snowflake JDBC Driver (Thin) to 4.3.4; Snowflake/Snowflake Libsnowflakeclient to 2.10.0; Snowflake/Snowflake Node.js Driver to 3.3.0; Snowflake/Snowflake ODBC Driver to 3.20.0; Snowflake/Snowflake PHP PDO Driver to 4.2.0; Snowflake/snowflake-sdk to 3.3.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 8, 2026

Sources and claim methodology

  • Source referencedocs.snowflake.com
  • Source referencedocs.snowflake.com
  • Source referencedocs.snowflake.com
  • Source referencedocs.snowflake.com
  • Source referencedocs.snowflake.com
  • Source referencedocs.snowflake.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
SSRF
EPSS
Not reported
CWE IDs
CWE-522, CWE-441
Source
CVE List V5
Source checked
Oct 25, 2026
References
8 linked sources
Open source record