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    4 vulnerabilities found for Snowflake Connector for Python by Snowflake

    CVE-2026-85525 (GCVE-0-2026-85525)

    Vulnerability from nvd – Published: 2026-09-04 08:22 – Updated: 2026-09-04 19:40
    VLAI
    Title
    Improper OCSP response validation in Snowflake drivers
    Summary
    Improper OCSP response validation in the Snowflake Python, Go, JDBC, and Node.js drivers allowed a revoked TLS certificate to be accepted as valid, because OCSP responses were not reliably bound to the certificate being validated and definitive verification failures were treated as transient. A man-in-the-middle attacker holding a revoked certificate and its private key for a Snowflake or stage hostname could cause the driver to establish a TLS session to the attacker-controlled endpoint anyway, allowing the attacker to read and modify data transmitted within that connection. Successful exploitation requires that on-path position and the corresponding private key, and impact is limited to data carried within the intercepted connection. The fix is available in the patched versions listed above. Users must manually upgrade.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-04 19:40 UTC
    CWE
    • CWE-295 - Improper Certificate Validation
    • CWE-347 - Improper Verification of Cryptographic Signature
    Assigner
    Show details on NVD website

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    CVE-2026-15925 (GCVE-0-2026-15925)

    Vulnerability from nvd – Published: 2026-07-16 05:31 – Updated: 2026-07-16 12:43
    VLAI
    Title
    Improper TLS Hostname Verification in Snowflake Connector for Python
    Summary
    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.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-16 12:43 UTC
    CWE
    • CWE-297 - Improper Validation of Certificate with Host Mismatch
    Assigner
    Impacted products
    Vendor Product Version
    Snowflake Snowflake Connector for Python Affected: 3.17.4 , < 3.18.1 (semver)
    Affected: 4.0.0 , < 4.7.1 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-85525 (GCVE-0-2026-85525)

    Vulnerability from cvelistv5 – Published: 2026-09-04 08:22 – Updated: 2026-09-04 19:40
    VLAI
    Title
    Improper OCSP response validation in Snowflake drivers
    Summary
    Improper OCSP response validation in the Snowflake Python, Go, JDBC, and Node.js drivers allowed a revoked TLS certificate to be accepted as valid, because OCSP responses were not reliably bound to the certificate being validated and definitive verification failures were treated as transient. A man-in-the-middle attacker holding a revoked certificate and its private key for a Snowflake or stage hostname could cause the driver to establish a TLS session to the attacker-controlled endpoint anyway, allowing the attacker to read and modify data transmitted within that connection. Successful exploitation requires that on-path position and the corresponding private key, and impact is limited to data carried within the intercepted connection. The fix is available in the patched versions listed above. Users must manually upgrade.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-04 19:40 UTC
    CWE
    • CWE-295 - Improper Certificate Validation
    • CWE-347 - Improper Verification of Cryptographic Signature
    Assigner
    Show details on NVD website

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    CVE-2026-15925 (GCVE-0-2026-15925)

    Vulnerability from cvelistv5 – Published: 2026-07-16 05:31 – Updated: 2026-07-16 12:43
    VLAI
    Title
    Improper TLS Hostname Verification in Snowflake Connector for Python
    Summary
    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.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-16 12:43 UTC
    CWE
    • CWE-297 - Improper Validation of Certificate with Host Mismatch
    Assigner
    Impacted products
    Vendor Product Version
    Snowflake Snowflake Connector for Python Affected: 3.17.4 , < 3.18.1 (semver)
    Affected: 4.0.0 , < 4.7.1 (semver)
    Create a notification for this product.
    Show details on NVD website

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                "baseSeverity": "CRITICAL",
                "privilegesRequired": "NONE",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "vectorString": "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",
                "version": "4.0",
                "vulnAvailabilityImpact": "LOW",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-297",
                  "description": "Improper Validation of Certificate with Host Mismatch",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-07-16T11:25:43.986Z",
            "orgId": "412d305a-227d-44f9-a262-a31ba44f2aea",
            "shortName": "SNOWFLAKE"
          },
          "references": [
            {
              "name": "Snowflake Connector for Python 3.18.1 Release Notes",
              "url": "https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v3.18.1"
            },
            {
              "name": "Snowflake Connector for Python 4.7.1 Release Notes",
              "url": "https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.7.1"
            }
          ],
          "title": "Improper TLS Hostname Verification in Snowflake Connector for Python",
          "x_generator": {
            "engine": "cvelib 1.8.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "412d305a-227d-44f9-a262-a31ba44f2aea",
        "assignerShortName": "SNOWFLAKE",
        "cveId": "CVE-2026-15925",
        "datePublished": "2026-07-16T05:31:35.515Z",
        "dateReserved": "2026-07-16T05:18:59.070Z",
        "dateUpdated": "2026-07-16T12:43:16.112Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }