CVE-2026-15925
CriticalCVSS 9.2Exploitation Probability (EPSS)
Low risk7th percentile - higher than 7% of all known CVEs
Summary
Snowflake Connector for Python versions prior to 4.7.1 and 3.18.1 lack proper TLS hostname verification. An attacker with on-path network access could intercept or redirect HTTPS traffic and present a certificate signed by any trusted CA for any domain, causing the connector to accept connections without validating the certificate matches the requested hostname.
Risk Assessment
The organization risks exposure of credentials, query data, and staged file contents to interception and tampering. The attacker may also execute arbitrary SQL within the victim's connector session, potentially compromising data confidentiality and integrity.
Recommendation
Immediately upgrade Snowflake Connector for Python to version 4.7.1 or 3.18.1. The upgrade must be performed manually by the administrator.
Original NVD description (English source)
Improper TLS hostname verification in Snowflake Connector for Python versions prior to 4.7.1 and 3.18.1 may have allowed a network-positioned attacker to bypass certificate hostname validation on HTTPS connections made by the connector. An attacker with on-path network access could exploit this by intercepting or redirecting network traffic and presenting a certificate signed by any trusted CA for any domain, causing the connector to accept connections without validating that the certificate matched the requested hostname. Successful exploitation requires an on-path traffic interception capability (e.g. ARP/DNS poisoning, rogue access point, BGP hijacking, or malicious proxy/exit node). This vulnerability may have exposed credentials, query data, and staged file contents to interception and tampering, and may have enabled the attacker to issue arbitrary SQL within the context of the victim's connector session. Impact is limited by the privileges of the affected Snowflake role. The fix is available in Snowflake Connector for Python versions 4.7.1 and 3.18.1. Users must manually upgrade.