CVE-2026-114456
Missing origin validation for the externalbrowser authenticator callback in multiple Snowflake client drivers
Description
Multiple 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.
INFO
Published Date :
Nov. 4, 2026, 12:17 p.m.
Last Modified :
Nov. 4, 2026, 12:17 p.m.
Remotely Exploit :
Yes !
Source :
412d305a-227d-44f9-a262-a31ba44f2aea
Affected Products
The following products are affected by CVE-2026-114456
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 | MEDIUM | 412d305a-227d-44f9-a262-a31ba44f2aea |
Solution
- Upgrade Snowflake Connector for Python to 4.8.0.
- Upgrade Snowflake Go Driver to v2.3.0 or later.
- Upgrade Snowflake JDBC Driver to 4.4.0 or later.
- Upgrade other affected Snowflake drivers manually.
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-2026-114456.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-114456 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-2026-114456
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-2026-114456 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-114456 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
Nov. 04, 2026
Action Type Old Value New Value Added Description Multiple 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Added CWE CWE-346 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/114xxx/CVE-2026-114456.json">CVE-2026-114456</a> Added Reference https://docs.snowflake.com/en/release-notes/clients-drivers/dotnet-2026#version-630-september-30-2026 Added Reference https://docs.snowflake.com/en/release-notes/clients-drivers/golang-2026#version-230-sep-30-2026 Added Reference https://docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026#version-440-sep-30-2026 Added Reference https://docs.snowflake.com/en/release-notes/clients-drivers/nodejs-2026#version-340-september-30-2026 Added Reference https://docs.snowflake.com/en/release-notes/clients-drivers/odbc-2026#version-400-sep-30-2026 Added Reference https://docs.snowflake.com/en/release-notes/clients-drivers/php-pdo-2026#version-430-oct-1-2026 Added Reference https://github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.11.1 Added Reference https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.8.0