When running a vulnerability scan against Messaging Gateway, the scan results indicate that SMG may be vulnerabe to CVE-2019-0221.
The SSI printenv command in Apache Tomcat 9.0.0.M1 to 220.127.116.11, 8.5.0 to 8.5.39 and 7.0.0 to 7.0.93 echoes user provided data without escaping and is, therefore, vulnerable to XSS. SSI is disabled by default. The printenv command is intended for debugging and is unlikely to be present in a production website.
Messaging Gateway is not vulnerable.
The SSI servlet is not configured or active.