GCVE-110-OSM-2026-12217

The package's postinstall lifecycle script (postinstall.js, wired via scripts.postinstall in package.json) checks the installer's hostname against a hardcoded allowlist value ('ubuntu-fc-uvm') and, on match, spawns /bin/bash with a reverse-shell one-liner opening an interactive TCP shell to 14.225.210.85:80. The script uses child_process.exec, includes retry logic and a 60-second timeout, and runs automatically on `npm install`. The hostname gate indicates a targeted-dropper shape aimed at specific installer environments; on matching hosts the operator obtains full interactive command execution on the installer's machine. ENTRY postinstall.js (install-hook: node postinstall.js) - Install Hook Executes Local JS File in package.json DESTINATION - 1 exfil (custom-c2) (values recorded in verified_iocs) EXFIL - System Information Collection in postinstall.js: "os.userInfo()" ADDITIONAL FINDINGS - Shell Command Execution in postinstall.js: "require('child_process')" - Brand New Package - Very New NPM Publisher Account PAYLOAD FILES postinstall.js