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VulnerabilityPublished

CVE-2026-114456: Snowflake Connector for Python · Origin Validation Error

Affects Snowflake Connector for PythonSource CVE Database V5

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Not known to be exploited · CVSS 6.5 Medium : upgrade to 4.8.0 when convenient.

Data as of 4 Nov 2026, 11:46 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (SNOWFLAKE)CVSS 3.16.5
Patch
Available – fixed in 4.8.0, 2.3.0, 4.4.0 +5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Snowflake Connector for Pythonsnowflake-connector-pythonAffected
  • <4.8.0
Fixed in
  • 4.8.0
Snowflake Go Drivergithub.com/snowflakedb/gosnowflakeAffected
  • >=1.1.5 <=1.19.1
Fixed in–
Snowflake Go Drivergithub.com/snowflakedb/gosnowflake/v2Affected
  • >=2.0.0 <2.3.0
Fixed in
  • 2.3.0
Snowflake JDBC Drivernet.snowflake:snowflake-jdbcAffected
  • >=3.2.3 <4.4.0
Fixed in
  • 4.4.0
Snowflake JDBC Driver (FIPS)net.snowflake:snowflake-jdbc-fipsAffected
  • >=3.2.3 <4.4.0
Fixed in
  • 4.4.0
Snowflake JDBC Driver (Thin)net.snowflake:snowflake-jdbc-thinAffected
  • >=3.2.3 <4.4.0
Fixed in
  • 4.4.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available and users must manually upgrade to the fixed versions: Snowflake Connector for Python 4.8.0, Snowflake Go Driver v2.3.0, Snowflake JDBC Driver 4.4.0, 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. Applying these updates mitigates the vulnerability.

Description

CVE-2026-114456 is a vulnerability in multiple Snowflake client drivers implementing the external browser single sign-on flow. The local loopback callback listener used during authentication reflected arbitrary Origin headers in CORS responses and accepted the first token-bearing request without verifying a CSRF state value. This flaw could allow an attacker able to reach the listener during an active login to submit a forged callback response, causing the authentication attempt to fail. Fixed versions are available across all affected Snowflake drivers.

References

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