# CVE-2026-114456: Missing origin validation for the externalbrowser authenticator callback in multiple Snowflake client drivers

> CVE-2026-114456: Missing origin validation for the externalbrowser authenticator callback in multiple Snowflake client drivers. CVSS 6.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-114456
Last updated: 2026-11-06T21:15:29Z

- Published: 2026-11-04 11:22 UTC · Updated: 2026-11-06 21:15 UTC · Assigner: SNOWFLAKE
- CVSS: 6.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS: 0.22%, 13th percentile (scored 2026-11-10)
- CISA KEV: no
- CWE: CWE-346

## 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.

## Affected vendors and products

- Snowflake: Snowflake Connector for .NET
- Snowflake: Snowflake Connector for Python
- Snowflake: Snowflake Go Driver
- Snowflake: Snowflake JDBC Driver
- Snowflake: Snowflake JDBC Driver (FIPS)
- Snowflake: Snowflake JDBC Driver (Thin)
- Snowflake: Snowflake Libsnowflakeclient
- Snowflake: Snowflake Node.js Driver
- Snowflake: Snowflake ODBC Driver
- Snowflake: Snowflake PHP PDO Driver

## Tracked companies

- [Snowflake](https://rewindex.com/company/snowflake.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-114456)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-114456)
- [https://docs.snowflake.com/en/release-notes/clients-drivers/dotnet-2026\#version-630-september-30-2026](https://docs.snowflake.com/en/release-notes/clients-drivers/dotnet-2026#version-630-september-30-2026)
- [https://docs.snowflake.com/en/release-notes/clients-drivers/golang-2026\#version-230-sep-30-2026](https://docs.snowflake.com/en/release-notes/clients-drivers/golang-2026#version-230-sep-30-2026)
- [https://docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026\#version-440-sep-30-2026](https://docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026#version-440-sep-30-2026)
- [https://docs.snowflake.com/en/release-notes/clients-drivers/nodejs-2026\#version-340-september-30-2026](https://docs.snowflake.com/en/release-notes/clients-drivers/nodejs-2026#version-340-september-30-2026)
- [https://docs.snowflake.com/en/release-notes/clients-drivers/odbc-2026\#version-400-sep-30-2026](https://docs.snowflake.com/en/release-notes/clients-drivers/odbc-2026#version-400-sep-30-2026)
- [https://docs.snowflake.com/en/release-notes/clients-drivers/php-pdo-2026\#version-430-oct-1-2026](https://docs.snowflake.com/en/release-notes/clients-drivers/php-pdo-2026#version-430-oct-1-2026)
- [https://github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.11.1](https://github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.11.1)
- [https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.8.0](https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.8.0)

---

_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


---
Canonical: https://rewindex.com/cve/CVE-2026-114456 · Markdown: https://rewindex.com/cve/CVE-2026-114456.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-114456 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-11T04:21:53.327Z