The npm package @kyronixai/executer version 1.0.5 contains malicious code that opens a WebSocket connection to a hardcoded external server. This connection allows remote parties to send commands that the package executes on the host system, including arbitrary shell commands and filesystem operations such as reading, writing, deleting, moving, copying files, and creating directories. There is no cryptographic authentication of these commands, and the remote server is a personal domain unrelated to the package scope, enabling full remote control of any machine running this package version.