Portal for ArcGIS has a directory traversal vulnerability (10.9.1, 10.8.1 and 10.7.1 only)

In some non-default installations of Esri Portal for ArcGIS versions 10.9.1 and below, a directory traversal issue may allow a remote, unauthenticated attacker to traverse the file system and lead to the disclosure of sensitive data (not customer-published content).