The npm package "interactive-git-checkout" is an interactive command-line tool that allows users to checkout a git branch while it prompts for the branch name on the command-line. It is available as an npm package and can be installed via "npm install -g interactive-git-checkout". Versions up to and including 1.1.4 of the "interactive-git-checkout" tool are vulnerable to a command injection vulnerability because the software passes the branch name to the "git checkout" command using the Node.js child process module's "exec()" function without proper input validation or sanitization. Commit 8dd832dd302af287a61611f4f85e157cd1c6bb41 fixes the issue.