Electric, a Postgres sync engine, contains a critical SQL injection vulnerability in the order_by parameter of the /v1/shape API endpoint. The vulnerability affects versions 1.1.12 to before 1.5.0 and allows authenticated users to perform error-based SQL injection attacks. Attackers can read, write, and destroy the full contents of the underlying PostgreSQL database through crafted ORDER BY expressions. The vulnerability has been fixed in version 1.5.0.