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CVE-2026-123859
Published:November 06, 2026
Updated:November 09, 2026
When 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.
Affected Packages
https://github.com/snowflakedb/snowflake-connector-python.git (GITHUB):
Affected version(s) >=v2.3.4 <v4.8.1 || >=v3.0.0 <v4.8.1 || >=v4.0.0 <v4.8.1
Fix Suggestion:
Update to version v4.8.1
https://github.com/snowflakedb/drivers.git (GITHUB):
Affected version(s) >=snowflake-connector-python/5.0.0b1 <snowflake-connector-python/5.2.0
Fix Suggestion:
Update to version snowflake-connector-python/5.2.0
snowflake-connector-python (PYTHON):
Affected version(s) >=3.0.0 <4.8.1 || >=2.3.4 <4.8.1 || >=4.0.0 <4.8.1
Fix Suggestion:
Update to version 4.8.1
snowflake-connector-python (PYTHON):
Affected version(s) >=5.0.0b1 <5.2.0
Fix Suggestion:
Update to version 5.2.0
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CVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Neutralization of Special Elements used in an SQL Command
EPSS
Base Score:
0.37