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Findings

CVE-2026-86597

Snowflake drivers writes sensitive information to logs

Published Oct 5, 2026 · updated Oct 15, 2026

Insertion of sensitive information into log files in the Snowflake Python, Go, JDBC, Node.js, PHP PDO, and ODBC drivers allowed authentication tokens, query-result encryption keys, pre-signed cloud-storage URLs, and SAML assertions to be written to diagnostic logs in circumstances where the available log redaction did not cover all affected log paths and data types. An attacker with read access to the log destination, whether the local filesystem, a log aggregation service, or a CI/CD artifact store, could obtain credentials and decryption keys that, if still valid at the time of access, could be used to authenticate to the corresponding Snowflake account or cloud-storage object. Successful exploitation requires read access to the log destination, and impact is bounded by credential lifetime and object scope. The fix is available in Snowflake Connector for Python v4.7.3, Snowflake Go Driver v2.2.0, Snowflake JDBC Driver v4.3.4 (including the snowflake-jdbc-fips and snowflake-jdbc-thin), Snowflake Node.js Driver v3.3.0, Snowflake PHP PDO Driver v4.2.0, and Snowflake ODBC Driver v3.20.0. Users must manually upgrade and should securely delete previously generated diagnostic logs containing sensitive information where retention is not required.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 5, 2026 · GitHub Advisory Database

    Detected

    Insertion of sensitive information into log files in the Snowflake Python, Go, JDBC, Node.js, PHP PDO, and ODBC drivers allowed authentication tokens, query-result encryption keys, pre-signed cloud-storage URLs, and SAML assertions to be written to diagnostic logs in circumstances where the available log redaction did not cover all affected log paths and data types. An attacker with read access to

  2. Oct 15, 2026 · GitHub Advisory Database

    Fix available

    snowflake-sdk fixed in 3.3.0; snowflake-connector-python fixed in 4.7.3; net.snowflake:snowflake-jdbc fixed in 4.3.4; net.snowflake:snowflake-jdbc-thin fixed in 4.3.4

  3. Oct 15, 2026 · GitHub Advisory Database

    Fix available

    snowflake-sdk fixed in 3.3.0

  4. Oct 15, 2026 · GitHub Advisory Database

    Fix available

    snowflake-connector-python fixed in 4.7.3

  5. Oct 15, 2026 · GitHub Advisory Database

    Fix available

    net.snowflake:snowflake-jdbc fixed in 4.3.4

  6. Oct 15, 2026 · GitHub Advisory Database

    Fix available

    net.snowflake:snowflake-jdbc-thin fixed in 4.3.4

  7. Oct 15, 2026 · GitHub Advisory Database

    Fix available

    net.snowflake:snowflake-jdbc-fips fixed in 4.3.4

  8. Oct 15, 2026 · GitHub Advisory Database

    Fix available

    github.com/snowflakedb/gosnowflake/v2 fixed in 2.2.0

  9. Oct 15, 2026 · GitHub Advisory Database

    Fix available

    github.com/snowflakedb/gosnowflake/v2 fixed in 2.2.0

  10. Oct 15, 2026 · GitHub Advisory Database

    Updated

    Insertion of sensitive information into log files in the Snowflake Python, Go, JDBC, Node.js, PHP PDO, and ODBC drivers allowed authentication tokens, query-result encryption keys, pre-signed cloud-storage URLs, and SAML assertions to be written to diagnostic logs in circumstances where the available log redaction did not cover all affected log paths and data types. An attacker with read access to

Affected

  • Go github.com/snowflakedb/gosnowflakeversion unspecified
  • Go github.com/snowflakedb/gosnowflake/v20 → 2.2.0
  • Maven net.snowflake:snowflake-jdbc0 → 4.3.4
  • Maven net.snowflake:snowflake-jdbc-fips0 → 4.3.4
  • Maven net.snowflake:snowflake-jdbc-thin0 → 4.3.4
  • PyPI snowflake-connector-python0 → 4.7.3
  • npm snowflake-sdk0 → 3.3.0

Sources

  • CVE.orgVulnerability recordCVE-2026-86597

    Official CVE identifier

    cve.org
  • GitHub Advisory DatabasePackage advisoryGHSA-qqj6-54q6-cxv6

    GitHub Advisory Database record mirrored by OSV.

    github.com
  • OSV.devPackage advisoryGHSA-qqj6-54q6-cxv6

    Snowflake drivers writes sensitive information to logs

    osv.dev
  • OSV.devPackage advisoryGO-2026-6665

    Snowflake Go Driver writes sensitive information to logs in github.com/snowflakedb/gosnowflake

    osv.dev

References