A new security patch for Portal for ArcGIS is out. The patch is available versions of portal 10.6.1, 10.5.1, 10.4.1, and 10.3.1 and is a cumulative security patch for all issues available for the Portal version. Check out the new blog post by Michael Young below for details: Portal for ArcGIS Critical Security Patch - Elevation of Privilege Vulnerability
Recommendation:
Everyone should install this patch
Pete