Improper OCSP response validation in Snowflake drivers

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-85525
StatePUBLISHED
AssignerSNOWFLAKE
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-04 09:17:11 UTC
Updated2026-09-04 20:17:32 UTC
DescriptionImproper 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.

Risk And Classification

Primary CVSS: v3.1 7.4 HIGH from 412d305a-227d-44f9-a262-a31ba44f2aea

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.001050000 probability, percentile 0.011610000 (date 2026-09-04)

Problem Types: CWE-295 | CWE-347 | CWE-295 Improper Certificate Validation | CWE-347 Improper Verification of Cryptographic Signature

VersionSourceTypeScoreSeverityVector
3.1412d305a-227d-44f9-a262-a31ba44f2aeaSecondary7.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
3.1CNACVSS7.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Snowflake Snowflake Connector For Python affected 4.7.3 python Not specified
CNA Snowflake Snowflake Go Driver affected 2.2.0 semver Not specified
CNA Snowflake Snowflake JDBC Driver affected 4.3.4 maven Not specified
CNA Snowflake Snowflake Node.js Driver affected 3.3.0 npm Not specified

References

ReferenceSourceLinkTags
docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026 412d305a-227d-44f9-a262-a31ba44f2aea docs.snowflake.com
docs.snowflake.com/en/release-notes/clients-drivers/golang-2026 412d305a-227d-44f9-a262-a31ba44f2aea docs.snowflake.com
docs.snowflake.com/en/release-notes/clients-drivers/nodejs-2026 412d305a-227d-44f9-a262-a31ba44f2aea docs.snowflake.com
github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.7.3 412d305a-227d-44f9-a262-a31ba44f2aea github.com
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