GCVE-110-OSM-2026-12150

The package's postinstall lifecycle script runs unconditionally on npm install. It collects host identifiers (hostname, platform, architecture, kernel release, uid/gid, CPU count, memory) and internal network interface addresses, base64-encodes the payload, and POSTs it over plain HTTP to the hardcoded subdomain vml73pdk3ft3t434ssjycv4khbn2btzi.oastify.com — a Burp Collaborator (OAST) callback host used to confirm code execution on the installer. The package has no other functionality; its sole install-time effect is the outbound beacon carrying installer reconnaissance data to an attacker-controlled domain. ENTRY postinstall.js (install-hook: node postinstall.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 postinstall.js: "oastify.com" - Data Encoding for Exfiltration in postinstall.js: "Buffer.from(json).toString('base64')" - Network Request in postinstall.js: "http.request(" - System Information Collection in postinstall.js: "os.hostname()" - Suspicious Domain in postinstall.js: "oastify.com" ADDITIONAL FINDINGS - Platform Detection with Data Collection in postinstall.js: "JSON.stringify({ data: b64, size: json.length, }); const req = http.request({ ho..." PAYLOAD FILES postinstall.js