supplyhub@1.0.2

The npm package `supplyhub` is a credential / SSH-key stealer. Its `package.json` declares a `postinstall` lifecycle hook (`postinstall: node postinstall.js`) that executes automatically on `npm install`, before the package is ever imported. `postinstall.js` uses `fs.readFileSync` to read the user's SSH private key (`~/.ssh/id_rsa`) and the process environment (`/proc/self/environ` — where CI/cloud tokens and npm tokens live), and gathers account/host identity via `os.userInfo()`; it also references `/etc/passwd`. The collected data is exfiltrated by HTTP POST to a hard-coded webhook.site dead-drop: `https://webhook.site/3c9418b3-cacd-403d-b42e-e9e4a9508fe3`. Only version 1.0.2 is malicious: version 1.0.0 (held in the codelake corpus) is clean — the exfiltration code was introduced in the 1.0.2 release (a trust-then-poison pattern). Any workstation or CI runner that installs supplyhub@1.0.2 (directly or transitively) hands its SSH key and environment secrets to the operator. Detected and classified independently by codelake Research from the live npm feed on 2026-07-20; not present in OSV or GHSA at the time of reporting (a first-catch).