Snowflake JDBC Driver auto-configuration account validation permits credential redirection

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-85528
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 input validation of the auto-configuration account identifier in Snowflake JDBC Driver versions 4.2.0 through 4.3.3 allowed a credential-bearing login request to be redirected to an attacker-selected HTTPS endpoint. An attacker able to control the account value could cause the driver to transmit a reusable login credential to a host of their choosing and replay it to obtain the privileges granted to that credential. Successful exploitation requires an application using jdbc:snowflake:auto with a connections.toml section that omits an explicit host and a lower-trust principal able to set the account value; ordinary JDBC URLs are unaffected. The fix is available in Snowflake JDBC Driver version 4.3.4. Users must manually upgrade.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from 412d305a-227d-44f9-a262-a31ba44f2aea

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

EPSS: 0.001820000 probability, percentile 0.078090000 (date 2026-09-04)

Problem Types: CWE-20 | CWE-918 | CWE-20 Improper Input Validation | CWE-918 Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1412d305a-227d-44f9-a262-a31ba44f2aeaSecondary5.3MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
3.1CNACVSS5.3MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Snowflake Snowflake JDBC Driver affected 4.2.0 4.3.4 maven Not specified

References

ReferenceSourceLinkTags
docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026 412d305a-227d-44f9-a262-a31ba44f2aea docs.snowflake.com
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