Improper Certificate Validation Affecting snowflake-connector-python package, versions [,4.7.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-PYTHON-SNOWFLAKECONNECTORPYTHON-19638983
- published7 Sept 2026
- disclosed4 Sept 2026
- creditUnknown
Introduced: 4 Sep 2026
NewCVE-2026-85525 (opens in a new tab)How to fix?
Upgrade snowflake-connector-python to version 4.7.3 or higher.
Overview
snowflake-connector-python is a Snowflake Connector for Python
Affected versions of this package are vulnerable to Improper Certificate Validation in the OCSP processing functionality, which accepts an OCSP response without checking that its CertID matches the certificate being validated and treats definitive verification failures as transient. An attacker holding a once-valid, now-revoked certificate and its private key can complete a TLS connection as a trusted server and read or modify transmitted data by presenting the revoked certificate alongside an OCSP response issued for a different serial. This requires the attacker to obtain that revoked certificate and its private key for the target host and to hold a MitM position on the connection.