Please check the Claris™ Engineering Blog with a lot of interesting articles. Just recently they added one for a security fix in FileMaker Server 19.4:

• Mitigating XXE vulnerabilities with the FileMaker 19.4.1 update (November 19, 2021)
• Best practices for importing SSL certificates using the FileMaker Admin API (November 16, 2021)
• Split menus for FileMaker Pro on MacBook Pro computers with Liquid Retina XDR displays (November 16, 2021)
• Protecting FileMaker Admin Console port 443 from brute-force attacks (November 16, 2021)
• Managing and maintaining FileMaker Server with the CLI (October 5, 2021)
• Integrating FileMaker custom apps with Slack (September 3, 2021)
• Deleting interactive container cache files (Windows) (August 11, 2021)
• Working with centralized logs in FileMaker Server (June 30, 2021)
• Enabling plug-ins for FileMaker Data API in FileMaker Server (June 24, 2021)
• Claris FileMaker 19.3.1 Platform bug fixes (June 23, 2021)