Snowflake JDBC Driver auto-configuration account validation permits credential redirection
Published Sep 4, 2026
5.3
MEDIUMCVSS 3.1
EPSS 0.29%
Description
Improper 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, including the snowflake-jdbc-fips and snowflake-jdbc-thin. Users must manually upgrade.
Affected products
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- Version 4.2.0StatusaffectedConstraints<4.3.4
- Version
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- Version 4.2.0StatusaffectedConstraints<4.3.4
- Version
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- Version 4.2.0StatusaffectedConstraints<4.3.4
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Snowflake | Snowflake JDBC Driver | unaffected |
| ||||||
| Snowflake | Snowflake JDBC Driver (FIPS) | unaffected |
| ||||||
| Snowflake | Snowflake JDBC Driver (Thin) | unaffected |
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No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Sep 4, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
Sep–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.29% (0.00290) | 19.63th | v5 (v2026.06.15) |
| Sep 4, 2026 | 0.18% (0.00182) | 7.81th | v5 (v2026.06.15) |
References (1)
Change history (0)
No recorded changes yet.