Source: amazon-inspector (6be723a2156cdb77cc97a0afb9ee15e4d50928a1924cd6cde69bcaacf2707a8b)

On npm install, the package's postinstall hook runs node index.js, which POSTs installer host information — the absolute path of the package file (leaking the OS username and home directory layout), Node.js version, platform, and architecture — to a hardcoded Discord webhook at discord.com/api/webhooks/1530599209269465319/. The webhook token is assembled via string concatenation at the call site to evade naive string matching. The destination is attacker-controlled and unrelated to the package's stated educational typo-catcher purpose, and there is no consent gate.

Credit: OpenSSF (source)

References

• https://github.com/ossf/malicious-packages/blob/e48a2ed516f973d5e1ccb9fbc7a6f18c7f58032c/osv/malicious/npm/whs4_ued/MAL-2026-13743.json
• https://www.npmjs.com/package/whs4_ued/v/1.0.0