Missing origin validation for the externalbrowser authenticator callback in multiple Snowflake client drivers

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-114456
StatePUBLISHED
AssignerSNOWFLAKE
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-04 12:17:06 UTC
Updated2026-11-04 12:17:06 UTC
DescriptionMultiple Snowflake client drivers implementing the `authenticator=externalbrowser` single sign-on flow could have allowed an attacker to interfere with a user's login attempt through weaknesses in the local loopback callback listener used to receive the identity provider's response. The listener reflected an arbitrary request's Origin header into its CORS response headers and accepted the first token-bearing request it received during the login window without verifying a CSRF state value bound to that specific login attempt. An attacker able to reach the listener during an active login might have leveraged this to submit a forged callback response, causing the authentication attempt to fail. The fix is available in Snowflake Connector for Python 4.8.0, Snowflake Go Driver v2.3.0, Snowflake JDBC Driver 4.4.0 (including the snowflake-jdbc-fips and snowflake-jdbc-thin artifacts), Snowflake Node.js Driver 3.4.0, Snowflake Connector for .NET 6.3.0, Snowflake ODBC Driver 4.0.0, Snowflake PHP PDO Driver 4.3.0, and libsnowflakeclient 2.11.1. Go v1 users must migrate to the latest major version of the module. Users must manually upgrade.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from 412d305a-227d-44f9-a262-a31ba44f2aea

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Problem Types: CWE-346 | CWE-346 Origin Validation Error

VersionSourceTypeScoreSeverityVector
3.1412d305a-227d-44f9-a262-a31ba44f2aeaSecondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
3.1CNACVSS6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Snowflake Snowflake Connector For Python affected 4.8.0 python Not specified
CNA Snowflake Snowflake Go Driver affected 1.1.5 1.19.1 semver Not specified
CNA Snowflake Snowflake Go Driver affected 2.0.0 2.3.0 semver Not specified
CNA Snowflake Snowflake JDBC Driver affected 3.2.3 4.4.0 maven Not specified
CNA Snowflake Snowflake JDBC Driver FIPS affected 3.2.3 4.4.0 maven Not specified
CNA Snowflake Snowflake JDBC Driver Thin affected 3.2.3 4.4.0 maven Not specified
CNA Snowflake Snowflake Node.js Driver affected 1.6.0 3.4.0 semver Not specified
CNA Snowflake Snowflake Connector For .NET affected 1.0.12 6.3.0 semver Not specified
CNA Snowflake Snowflake ODBC Driver affected 3.7.0 4.0.0 semver Not specified
CNA Snowflake Snowflake PHP PDO Driver affected 3.2.0 4.3.0 semver Not specified
CNA Snowflake Snowflake Libsnowflakeclient affected 2.1.0 2.11.1 semver Not specified

References

ReferenceSourceLinkTags
docs.snowflake.com/en/release-notes/clients-drivers/odbc-2026 412d305a-227d-44f9-a262-a31ba44f2aea docs.snowflake.com
docs.snowflake.com/en/release-notes/clients-drivers/golang-2026 412d305a-227d-44f9-a262-a31ba44f2aea docs.snowflake.com
docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026 412d305a-227d-44f9-a262-a31ba44f2aea docs.snowflake.com
docs.snowflake.com/en/release-notes/clients-drivers/dotnet-2026 412d305a-227d-44f9-a262-a31ba44f2aea docs.snowflake.com
github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.8.0 412d305a-227d-44f9-a262-a31ba44f2aea github.com
github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.11.1 412d305a-227d-44f9-a262-a31ba44f2aea github.com
docs.snowflake.com/en/release-notes/clients-drivers/nodejs-2026 412d305a-227d-44f9-a262-a31ba44f2aea docs.snowflake.com
docs.snowflake.com/en/release-notes/clients-drivers/php-pdo-2026 412d305a-227d-44f9-a262-a31ba44f2aea docs.snowflake.com
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