SQL Injection via unescaped DataFrame column names in Snowflake Connector for Python and Snowflake Connector for Python (Universal Core)

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-123859
StatePUBLISHED
AssignerSNOWFLAKE
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-06 17:17:25 UTC
Updated2026-11-06 21:15:29 UTC
DescriptionWhen identifier escaping is disabled through a non-default configuration, the write_pandas() data-loading functionality in the Snowflake Connector for Python and the Snowflake Connector for Python (Universal Core) did not escape DataFrame column names before including them in generated SQL, which could allow SQL injection. In both products, a crafted column name could have been used to chain additional SQL statements onto the generated statement, potentially allowing an attacker to read, modify, or delete other data accessible to the application's Snowflake role. Exploitation required an application to pass attacker controlled column names into this functionality. The fix is available in Snowflake Connector for Python version 4.8.1 and Snowflake Connector for Python (Universal Core) version 5.2.0. Users must upgrade manually.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from 412d305a-227d-44f9-a262-a31ba44f2aea

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

Problem Types: CWE-89 | CWE-89 Improper Neutralization of Special Elements used in an SQL Command

VersionSourceTypeScoreSeverityVector
3.1412d305a-227d-44f9-a262-a31ba44f2aeaSecondary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Snowflake Snowflake Connector For Python affected 2.3.4 4.8.1 python Not specified
CNA Snowflake Snowflake Connector For Python Universal Core affected 5.0.0b1 5.2.0 python Not specified

References

ReferenceSourceLinkTags
docs.snowflake.com/en/release-notes/clients-drivers/python-connector-2026 412d305a-227d-44f9-a262-a31ba44f2aea docs.snowflake.com
docs.snowflake.com/en/release-notes/clients-drivers/python-connector-2026 412d305a-227d-44f9-a262-a31ba44f2aea docs.snowflake.com
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