MAL-2026-13445

Dashboard / Malicious Package / MAL-2026-13445

MAL-2026-13445

Summary: Malicious code in elephant-tusk-runner (npm)

Details: Source: amazon-inspector (4ddbdcdca1756bee69586881547c9e63f555685a2e5e3daa68a9519987edd37a) server.js starts an Express + WebSocket server via app.listen(PORT,...) with no host argument, defaulting the bind to 0.0.0.0, with fully open CORS (Access-Control-Allow-Origin: *) and no authentication. A WebSocket route /terminal-stream and HTTP POST /api/v1/workspace-terminal-command each spawn a bash or powershell.exe PTY and pipe network-received bytes directly into ptySession.write(...), giving any peer that can reach port 4201 an interactive shell on the host running the tool. Additional endpoints on the same listener call child_process.exec with attacker-controllable arguments, including `git clone --depth=1 ${targetGitUrl}...`, `composer install && php artisan key:generate`, `npm install`, `php "${terminalFile}"`, and taskkill/kill on arbitrary PIDs, plus a fetch-proxy that forwards arbitrary target URLs. The listener is started by `npm start` and by the `tusk`/`elephant` CLI shipped in the package's bin entries. On any developer or build machine on a shared or reachable network, this exposes a full remote-shell and remote-code-execution surface for the duration the tool runs.

References: https://www.npmjs.com/package/elephant-tusk-runner/v/1.0.1, https://www.npmjs.com/package/elephant-tusk-runner/v/1.0.0