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cppt-common@13.1.1 declares a preinstall hook ("preinstall": "node index.js") that runs automatically on npm install. index.js collects host and user identifiers — os.hostname(), os.userInfo(), the output of whoami and id via child_process.exec, platform/arch/memory, cwd, homedir, and shell — and POSTs the collected JSON to a hardcoded endpoint at https://mj9yg25wm8m4vnkrrok8lwcogfm6awyl.oastify.com/detox56. The oastify.com host is a Burp Collaborator out-of-band callback domain used for exfiltration. The package has empty description and author fields and provides no advertised functionality; its only install-time effect is the reconnaissance beacon.
13.1.1Exploitability
AV:NAC:LPR:NUI:NScope
S:CImpact
C:HI:HA:H10.0/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H