{"id":"CVE-2026-85528","summary":"Snowflake JDBC Driver auto-configuration account validation permits credential redirection","details":"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.","modified":"2026-09-12T03:30:43.356671755Z","published":"2026-09-04T08:36:28.553Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85528.json","cna_assigner":"SNOWFLAKE","cwe_ids":["CWE-20","CWE-918"]},"references":[{"type":"WEB","url":"https://docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026#version-434-sep-03-2026"},{"type":"WEB","url":"https://repo.maven.apache.org/maven2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85528.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85528"},{"type":"PACKAGE","url":"https://github.com/snowflakedb/snowflake-jdbc"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/snowflakedb/snowflake-jdbc","events":[{"introduced":"42fd80c5afa44e19cd6fc249d061ed6c1758f7b5"},{"fixed":"43731aeb32f1a8e766b38322963611da2c5c019e"}],"database_specific":{"extracted_events":[{"introduced":"4.2.0"},{"fixed":"4.3.4"}],"source":"AFFECTED_FIELD"}}],"versions":["v4.3.3","v4.3.2","v4.3.1","v4.3.0","v4.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-85528.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}