CVE-2026-12717: BigQuery Data Transfer Service: big query data transfer: Remote Code Execution in BigQuery Data Transfer Service via JDBC Connection String Injection

Severity: Critical

CVSS Score: 9.4

An Improper Input Validation vulnerability in CData JDBC driver integration in Google Cloud BigQuery Data Transfer Service versions prior to 2026-05-01 on Google Cloud Platform allows an authenticated attacker to achieve remote code execution in the connector container and escalate privileges in the tenant project using crafted JDBC connection string parameters. This vulnerability was patched on 1 May 2026, and no customer action is needed.