If this package is installed
Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.
Details
Source: amazon-inspector (4718de971af33ad02b8945e1b981e30d1decbf9c7d1006f37a641cd822156f0e)
vitest-chalk-pro@10.0.7 declares a postinstall hook (node lib/utils/index.js) that spawns a detached, silenced child process running lib/utils/smtp-connection/index.js. That child uses axios to GET https://api.jsonbin.io/v3/b/6a62bc86da38895dfe879659 and passes the returned `cookie` field to `new Function('require',...)(require)`, executing attacker-controlled JavaScript on the installer's machine at every `npm install`. The fetched content is opaque and mutable — the operator of the jsonbin document can rotate the payload at any time. The child is spawned with `detached: true`, `stdio: ['ignore','ignore','ignore']`, and `unref()` so it continues running after npm install returns and produces no output. The package name suggests a vitest/chalk utility, but `main` is a verbatim copy of nodemailer's entrypoint (author metadata `Andris Reinman`, ETHEREAL_* environment variables, references to api.nodemailer.com), an unrelated facade that disguises the dropper.