bnppf-flag-icons@99.99.99

Summary

The package ships poc.js and wires it to both preinstall and postinstall lifecycle hooks in package.json, so it runs automatically on npm install. poc.js requires os and https, reads os.hostname() and os.userInfo().username, and sends them via HTTPS GET to a hardcoded webhook.site collector at https://webhook.site/f3d7a882-435a-4959-a4e9-18a3886f3447. The package name suggests a flag-icons library but the shipped code performs only host identifier exfiltration to an anonymous third-party collector; the version 99.99.99 is consistent with a dependency-confusion attempt. Installing the package causes the installer's hostname and OS username to be transmitted to an attacker-controlled endpoint.

Source: amazon-inspector (689227d0fdfe4abc108c7dfc5b5b97e752182a410265c141ca33161247619e78)