CVE-2026-86600 (GCVE-0-2026-86600)
Vulnerability from cvelistv5 – Published: 2026-09-08 15:48 – Updated: 2026-09-08 15:48
VLAI
EPSS
VEX
Title
Workload identity attestation generated before login host validation in Snowflake drivers
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.
Severity
8.2 (High)
CWE
Assigner
References
8 references
Impacted products
8 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Snowflake | Snowflake Connector for Python |
Affected:
3.14.1 , < 4.7.3
(python)
|
guessed | |
| Snowflake | Snowflake Go Driver |
Affected:
1.15.0 , < 2.2.0
(semver)
|
guessed | |
| Snowflake | Snowflake JDBC Driver |
Affected:
3.24.0 , < 4.3.4
(maven)
|
guessed | |
| Snowflake | Snowflake Node.js Driver |
Affected:
2.1.1 , < 3.3.0
(npm)
|
guessed | |
| Snowflake | Snowflake Connector for .NET |
Affected:
4.7.0 , < 6.1.0
(semver)
|
guessed | |
| Snowflake | Snowflake ODBC Driver |
Affected:
3.9.0 , < 3.20.0
(semver)
|
guessed | |
| Snowflake | Snowflake PHP PDO Driver |
Affected:
3.6.0 , < 4.2.0
(semver)
|
guessed | |
| Snowflake | Snowflake Libsnowflakeclient |
Affected:
2.2.0 , < 2.10.0
(semver)
|
guessed |
{
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}
],
"metrics": [
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"url": "https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.7.3"
},
{
"name": "Snowflake Go Driver Release Notes",
"url": "https://docs.snowflake.com/en/release-notes/clients-drivers/golang-2026#version-220-sep-03-2026"
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{
"name": "Snowflake JDBC Driver Release Notes",
"url": "https://docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026#version-434-sep-03-2026"
},
{
"name": "Snowflake Node.js Driver Release Notes",
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"name": "Snowflake PHP PDO Driver Release Notes",
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{
"name": "Snowflake Libsnowflakeclient Release Notes",
"url": "https://github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.10.0"
}
],
"title": "Workload identity attestation generated before login host validation in Snowflake drivers",
"x_generator": {
"engine": "cvelib 1.8.0"
}
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},
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"assignerShortName": "SNOWFLAKE",
"cveId": "CVE-2026-86600",
"datePublished": "2026-09-08T15:48:45.858Z",
"dateReserved": "2026-09-08T08:32:19.278Z",
"dateUpdated": "2026-09-08T15:48:45.858Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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