Improper OCSP response validation in Snowflake drivers

Description

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 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), and Snowflake Node.js Driver v3.3.0. Users must manually upgrade.

Scores

EPSS (exploitation in 30 days)

0.16% · top 95% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.4.

Weakness

• CWE-295: Improper Certificate Validation (opens in a new tab)All about CWE-295 and its CVEs
• CWE-347: Improper Verification of Cryptographic Signature (opens in a new tab)All about CWE-347 and its CVEs

Affected products

• Snowflake · Snowflake Connector for Python

  • affected < 4.7.3

• Snowflake · Snowflake Go Driver

  • affected ≤ 1.19.1

• Snowflake · Snowflake Go Driver

  • affected 2.0.0 – < 2.2.0

• Snowflake · Snowflake JDBC Driver

  • affected < 4.3.4

• Snowflake · Snowflake JDBC Driver (FIPS)

  • affected < 4.3.4

• Snowflake · Snowflake JDBC Driver (Thin)

  • affected < 4.3.4

• Snowflake · Snowflake Node.js Driver

  • affected < 3.3.0

References (4)

• Snowflake Connector for Python Release Notes (opens in a new tab)
• Snowflake Go Driver Release Notes (opens in a new tab)
• Snowflake JDBC Driver Release Notes (opens in a new tab)
• Snowflake Node.js Driver Release Notes (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-85525](https://trackcve.app/badge/CVE-2026-85525.svg)](https://trackcve.app/cve/CVE-2026-85525)

Record last updated 10 Sept 2026, 15:44 UTC.