GCVE-110-OSM-2026-12420

index.js is the package main and runs as an IIFE on require()/import. It reads document.cookie, slices document.body.innerHTML, and issues fetch('/profile', {credentials: 'include'}) to capture an authenticated response, then transmits the concatenated data via navigator.sendBeacon/fetch to a hardcoded collector at https://webhook.site/c4e39647-bfb8-47ef-b6d4-a112aacc6cd1. The destination is an unrelated third-party request-inspection service used as an exfiltration sink; the package has no declared legitimate purpose consistent with reading cookies or authenticated profile content. Behavior is a session-cookie and credentialed-response exfiltration payload rather than a functional library. ENTRY index.js (main: index.js) DESTINATION - 1 exfil (custom-c2) (values recorded in verified_iocs) EXFIL - OAST/Interactsh Exfiltration in index.js: "webhook.site" ADDITIONAL FINDINGS - Very New NPM Publisher Account - Publisher Has Other Malicious Packages - Publisher Shows Burner-Account Pattern PAYLOAD FILES index.js