GCVE-110-OSM-2026-12503

@uol-afiliados/affiliated-config-lib@102.0.0 declares a preinstall hook (`node index.js`) that shells out via `require('child_process').exec` to run `curl` against a subdomain of `hqbv58hgt1sjk7vf7ru4o0mwzn5etahz.oastify.com` (Burp Collaborator out-of-band interaction infrastructure). The subdomain is constructed with shell command substitution `$(hostname).$(whoami)`, so the installer's host name and current user name are embedded in the DNS/HTTP request and sent to the attacker-controlled collector automatically on `npm install`. The package ships no legitimate functionality — the sole install-time effect is host/user identifier exfiltration. The scoped name `@uol-afiliados/*` mimics an internal organization namespace, consistent with dependency-confusion reconnaissance. ENTRY index.js (install-hook: node index.js) - Install Hook Executes Local JS File in package.json DESTINATION - 1 exfil (custom-c2) (values recorded in verified_iocs) EXFIL - OAST/Interactsh Exfiltration in index.js: "oastify.com" - Suspicious Domain in index.js: "oastify.com" ADDITIONAL FINDINGS - Shell Command Execution in index.js: "require("child_process")" - Brand New Package - Very New NPM Publisher Account PAYLOAD FILES index.js