It has been reported that any Orion user, e.g. guest accounts can query the Orion.UserSettings entity and enumerate users and their basic settings.
https://www.solarwinds.com/trust-center/security-advisories/CVE-2021-35248
https://support.solarwinds.com/SuccessCenter/s/article/Orion-Platform-2020-2-6-Hotfix-3