CVE-2026-123859 When identifier escaping is disabled through a non-default configuration, the write_pandas() data-loading functionality in the Snowflake Con
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-123859?
CVE-2026-123859 is a high-severity vulnerability in Snowflake Connector for Python, published on 6 Nov 2026.
Official description
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.
Weakness: CWE-89
Which versions are affected by CVE-2026-123859?
How do I fix CVE-2026-123859?
No fix has been published for CVE-2026-123859 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-123859 being exploited?
There is no known exploitation of CVE-2026-123859 in the wild and no public exploit code.
Sources
Also known as GHSA-wfjf-896m-7r59.