CVE-2026-86600
Workload identity attestation generated before login host validation in Snowflake drivers
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.
INFO
Published Date :
Sept. 8, 2026, 4:18 p.m.
Last Modified :
Sept. 8, 2026, 4:18 p.m.
Remotely Exploit :
Yes !
Source :
412d305a-227d-44f9-a262-a31ba44f2aea
Affected Products
The following products are affected by CVE-2026-86600
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 412d305a-227d-44f9-a262-a31ba44f2aea |
Solution
- Upgrade Snowflake drivers to patched versions.
- Restrict authentication to recognized Snowflake hosts.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-86600.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-86600 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-86600
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-86600 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-86600 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 412d305a-227d-44f9-a262-a31ba44f2aea
Sep. 08, 2026
Action Type Old Value New Value 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. Added CVSS V3.1 AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N Added CWE CWE-441 Added CWE CWE-522 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/86xxx/CVE-2026-86600.json">CVE-2026-86600</a> Added Reference https://docs.snowflake.com/en/release-notes/clients-drivers/dotnet-2026#version-610-september-3-2026 Added Reference https://docs.snowflake.com/en/release-notes/clients-drivers/golang-2026#version-220-sep-03-2026 Added Reference https://docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026#version-434-sep-03-2026 Added Reference https://docs.snowflake.com/en/release-notes/clients-drivers/nodejs-2026#version-330-september-3-2026 Added Reference https://docs.snowflake.com/en/release-notes/clients-drivers/odbc-2026#version-3200-sep-3-2026 Added Reference https://docs.snowflake.com/en/release-notes/clients-drivers/php-pdo-2026#version-420-sep-3-2026 Added Reference https://github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.10.0 Added Reference https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.7.3