EUVD-2026-44869
GHSA-5cc2-282f-jjq2
Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
AC:H because exploitation requires an established on-path MITM position; PR:N/UI:N as no auth or victim action is needed once intercepted; C:H/I:H for credential/data theft and SQL injection, A:L for limited availability impact.
Primary rating from Vendor (SNOWFLAKE).
CVSS VectorVendor: SNOWFLAKE
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
4DescriptionCVE.org
Improper TLS hostname verification in Snowflake Connector for Python versions prior to 4.7.1 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 version 4.7.1. Users must manually upgrade.
Articles & Coverage 1
AnalysisAI
Improper TLS hostname verification in the Snowflake Connector for Python (versions before 4.7.1) lets an on-path attacker defeat HTTPS certificate validation, accepting any certificate signed by any trusted CA regardless of the requested hostname. An adversary who can intercept traffic can decrypt and tamper with connector sessions, exposing Snowflake credentials, query results, and staged file data, and can inject arbitrary SQL bounded by the victim role's privileges. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to already hold an active on-path traffic-interception position between the victim connector and Snowflake - concretely ARP or DNS poisoning on the local segment, a rogue/evil-twin access point, BGP hijacking of the route, or operation of a malicious proxy or Tor-style exit node the victim's traffic traverses. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The vendor CVSS 4.0 vector (AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L) scores 9.2, but the decisive metric is AT:P - a specific Attack Requirement is present, namely a privileged on-path network position. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A data engineer runs a Python job using a vulnerable connector while connected through a rogue Wi-Fi access point or a compromised proxy. The attacker redirects the TLS session to their own endpoint, presents a legitimately CA-signed certificate for an unrelated domain, and because hostname matching is skipped the connector completes the handshake - letting the attacker capture the Snowflake credentials and query data and inject arbitrary SQL within the victim's role. … |
| Remediation | Vendor-released patch: version 4.7.1. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: inventory all systems running Snowflake Connector for Python to identify affected versions and map network paths. …
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External POC / Exploit Code
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