In JetBrains IntelliJ IDEA 2019.2, an XSLT debugger plugin misconfiguration allows arbitrary file read operations over the network. This issue was fixed in 2019.3.
In JetBrains Rider versions 2019.3 EAP2 through 2019.3 EAP7, there were unsigned binaries provided by the Windows installer. This issue was fixed in release version 2019.3.