Improper OCSP response validation in Snowflake drivers (CVE-2026-85525) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-85525

Improper OCSP response validation in Snowflake drivers

Answer in brief

CVE-2026-85525 records a Unknown severity vulnerability in Improper OCSP response validation in Snowflake drivers. The current sources do not mark it as known exploited. The current feed maps Snowflake/Snowflake Connector for Python (generic), Snowflake/Snowflake Go Driver (generic), Snowflake/Snowflake JDBC Driver (generic), Snowflake/Snowflake Node.js Driver (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 4, 2026Updated Sep 4, 2026Source checked Sep 4, 2026First seen by HOL Sep 4, 2026Material review Sep 4, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 4 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Snowflake/Snowflake Connector for Python (generic), Snowflake/Snowflake Go Driver (generic), Snowflake/Snowflake JDBC Driver (generic), Snowflake/Snowflake Node.js Driver (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Snowflake/Snowflake Connector for Pythongeneric	>=0 <4.7.3	4.7.3
Snowflake/Snowflake Go Drivergeneric	>=0 <2.2.0	2.2.0
Snowflake/Snowflake JDBC Drivergeneric	>=0 <4.3.4	4.3.4
Snowflake/Snowflake Node.js Drivergeneric	>=0 <3.3.0	3.3.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for Snowflake/Snowflake Connector for Python, Snowflake/Snowflake Go Driver, Snowflake/Snowflake JDBC Driver.
Review the reported fix. Update Snowflake/Snowflake Connector for Python to 4.7.3; Snowflake/Snowflake Go Driver to 2.2.0; Snowflake/Snowflake JDBC Driver to 4.3.4; Snowflake/Snowflake Node.js Driver to 3.3.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 4, 2026

Sources and claim methodology

Upstream source 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 the patched versions listed above. Users must manually upgrade.

Quoted source text, attributed separately from HOL analysis.