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 several versions of JetBrains IntelliJ IDEA Ultimate, creating Task Servers configurations leads to saving a cleartext unencrypted record of the server credentials in the IDE configuration files. The issue has been fixed in the following versions: 2019.1, 2018.3.5, 2018.2.8, and 2018.1.8.
IntelliJ IDEA XML parser was found vulnerable to XML External Entity attack, an attacker can exploit the vulnerability by implementing malicious code on both Androidmanifest.xml.