# CVE-2026-85525: Improper OCSP response validation in Snowflake drivers

> CVE-2026-85525: Improper OCSP response validation in Snowflake drivers. CVSS 7.4 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-85525
Last updated: 2026-09-10T16:17:58Z

- Published: 2026-09-04 08:22 UTC · Updated: 2026-09-10 16:17 UTC · Assigner: SNOWFLAKE
- CVSS: 7.4 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS: 0.16%, 5th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-295, CWE-347

## 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.

## Affected vendors and products

- Snowflake: Snowflake Connector for Python
- Snowflake: Snowflake Go Driver
- Snowflake: Snowflake JDBC Driver
- Snowflake: Snowflake JDBC Driver (FIPS)
- Snowflake: Snowflake JDBC Driver (Thin)
- Snowflake: Snowflake Node.js Driver

## Tracked companies

- [Snowflake](https://rewindex.com/company/snowflake.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-85525)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-85525)
- [https://docs.snowflake.com/en/release-notes/clients-drivers/golang-2026](https://docs.snowflake.com/en/release-notes/clients-drivers/golang-2026)
- [https://docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026](https://docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026)
- [https://docs.snowflake.com/en/release-notes/clients-drivers/nodejs-2026](https://docs.snowflake.com/en/release-notes/clients-drivers/nodejs-2026)
- [https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.7.3](https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.7.3)

---

_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


---
Canonical: https://rewindex.com/cve/CVE-2026-85525 · Markdown: https://rewindex.com/cve/CVE-2026-85525.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-85525 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:05:28.055Z