The development-time LiveReload support listens on all network interfaces without authentication and accepts websocket connections from any origin. A network attacker, or a web page visited by the developer, can observe the names of changed files in the watched folder and the server version, and reach the deployed applications through the additional port. This only affects LiveReload enabled in the embedded Maven plugin. Users are recommended to upgrade to version 10.3.0 or 11.0.0-M2, which fix the issue.