CVE-2025-46330: Snowflake Connector for C/C++ retries malformed requests

Severity: low (CVSS 3.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-04-29 · updated 2026-06-17
Weakness: CWE-573

Description

libsnowflakeclient is the Snowflake Connector for C/C++. Versions starting from 0.5.0 to before 2.2.0, incorrectly treat malformed requests that caused the HTTP response status code 400, as able to be retried. This could hang the application until SF_CON_MAX_RETRY requests were sent. This issue has been patched in version 2.2.0.

Affected products

Snowflake Connector For C/C++: from 0.5.0 before 2.2.0 — fixed in 2.2.0

How to fix

Upgrade to a fixed version: Snowflake Connector For C/C++ 2.2.0. Check the vendor advisory for mitigations.

References

https://github.com/snowflakedb/libsnowflakeclient/pull/882/commits/8120a057e041722e114ed2c5dbed3b5a649f72e2
https://github.com/snowflakedb/libsnowflakeclient/security/advisories/GHSA-ch37-53v3-m4cm

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