The SimpleSAML admin page should only be accessible when the SSO Log Level is set to DEV, but it is also accessible when it is set to PROD.
This has been fixed in FileCloud Version 126.96.36.19909.
The SimpleSAML admin page is no longer accessible when the SSO Log Level is set to PROD.
If you are using the FileCloud on premise installation, please update to the latest version.
If you are using FileCloud online, your site has already been updated to the latest version.