What’s Vulnerable › Vulnerabilities
CVE-2026-85528: Snowflake JDBC Driver auto-configuration account validation permits credential redirection
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-04 · updated 2026-09-10
- Weakness: CWE-20
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
- Snowflake JDBC Driver: from 4.2.0 before 4.3.4 — fixed in 4.3.4
- Snowflake JDBC Driver (FIPS): from 4.2.0 before 4.3.4 — fixed in 4.3.4
- Snowflake JDBC Driver (Thin): from 4.2.0 before 4.3.4 — fixed in 4.3.4
How to fix
Upgrade to a fixed version: Snowflake JDBC Driver 4.3.4; Snowflake JDBC Driver (FIPS) 4.3.4; Snowflake JDBC Driver (Thin) 4.3.4. Check the vendor advisory for mitigations.
References
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