Code Hardening

How command injection happens in Ruby and how to fix it

A Fastlane helper used a Ruby backtick subshell to clone a plugin's git repository, interpolating `self.homepage` directly into a shell command string. Even with `shellescape` applied, the pattern was flagged as a dangerous subshell that could be chained into a command injection primitive; the fix replaces it with `system()` using an argument array, eliminating shell interpretation entirely.