registry / 9remote / 2.1.6

9remote@2.1.6

Remote terminal access from anywhere

OSV Malicious Advisory

scanned 9d ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-13406 confirms this npm version as malicious. 9remote is a remote-shell tool: its CLI launches an HTTP/WebSocket server and provisions a Cloudflare Quick Tunnel that exposes the host to the public internet at a 9remote.cc-fronted URL. Incoming WebSocket `input` messages are forwarded verbatim into a locally spawned PTY (bash/zsh on Unix, cmd.exe/powershell.exe on Windows) via `pty.write(s.data)`, after `spawn(o.path, o.args,...)` in the pty daemon...

Advisory

MAL-2026-13406

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in 9remote (npm)

Details

9remote is a remote-shell tool: its CLI launches an HTTP/WebSocket server and provisions a Cloudflare Quick Tunnel that exposes the host to the public internet at a 9remote.cc-fronted URL. Incoming WebSocket `input` messages are forwarded verbatim into a locally spawned PTY (bash/zsh on Unix, cmd.exe/powershell.exe on Windows) via `pty.write(s.data)`, after `spawn(o.path, o.args,...)` in the pty daemon. The server's router treats requests bearing the `cf-connecting-ip` header as remote-authorized. Access is gated by a short-lived (~30-minute) one-time pair key shown as a QR code; anyone who obtains that key over the tunnel obtains a full interactive shell on the host with the user's privileges. The package is invoked explicitly by the operator (bin entry, not lifecycle scripts or top-level require side effects), and the tunnel terminates at first-party infrastructure (9remote.cc / Cloudflare), so this is the advertised behavior of the tool rather than a covert channel — but the blast radius on any host where the CLI is run is full-host remote code execution behind a single short-lived key.

Decision reason

One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source

References

OSV advisory OpenSSF JSON

Decision evidence

public snapshot

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNativeBindingsNetwork

Supply chain

HighEntropyStringsMinifiedObfuscatedUrlStrings

ManifestNo manifest risk signals triggered.

scanned 4 file(s), 1.08 MB of source, external domains: 127.0.0.1, android.googleapis.com, exp.host, fcm.googleapis.com, feross.org, github.com, mths.be, registry.npmjs.org, socket.io, www.apple.com, www.w3.org

Oversized source lightweight scan

dist/ui/assets/index-BxhFJ5gG.js2.30 MB file, sampled 256 KB

NetworkHighEntropyStringsUrlStringswww.w3.org

Source & flagged code

11 flagged

package.jsonView file

Lines 1-39json

2 "name": "9remote",

3 "version": "2.1.6",

4 "type": "module",

5 "description": "Remote terminal access from anywhere",

6 "main": "dist/server.cjs",

7 "bin": {

8 "9remote": "./dist/cli.cjs"

9 },

10 "scripts": {

11 "start": "node cli/index.js",

12 "ui": "node cli/index.js ui",

13 "dev": "NODE_ENV=development nodemon cli/index.js",

14 "dev:ui": "npm-run-all --parallel dev:ui:run dev:vite:wait",

15 "dev:vite": "vite",

16 "dev:vite:wait": "wait-on http://localhost:2208/api/health && vite",

17 "dev:ui:run": "NODE_ENV=development node cli/index.js ui",

18 "build:ui": "vite build",

19 "postinstall": "node dist/install.cjs || true"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L19

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg · L19

20 },

21 "files": [

22 "dist/"

23 ],

24 "keywords": [

25 "remote",

26 "terminal",

27 "ssh",

28 "cli"

29 ],

30 "license": "MIT",

31 "dependencies": {

32 "@julusian/jpeg-turbo": "^3.0.1",

33 "@xterm/addon-fit": "^0.11.0",

34 "@xterm/addon-unicode11": "^0.9.0",

35 "@xterm/xterm": "^6.0.0",

36 "bufferutil": "4.1.0",

37 "chalk": "^5.4.1",

38 "chokidar": "^3.6.0",

39 "edge-tts-node": "^1.5.7",

dist/install.cjsView file

Lines 1-4javascript

1#!/usr/bin/env node

2const __importMetaUrl = require('url').pathToFileURL(__filename).href;

3var f=Object.create;var l=Object.defineProperty;var S=Object.getOwnPropertyDescriptor;

dist/ptyDaemon.cjsView file

Lines 1-13javascript

1#!/usr/bin/env node

2const __importMetaUrl = require('url').pathToFileURL(__filename).href;

3var U=Object.create;var A=Object.defineProperty;var Z

dist/server.cjsView file

•matchType = previous_version_dangerous_delta matchedPackage = 9remote@2.0.70 matchedIdentity = npm:OXJlbW90ZQ:2.0.70 similarity = 0.500 summary = stored previous version shares package body but lacks this dangerous source file

Critical

Previous Version Dangerous Delta

This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.

dist/server.cjsView on unpkg

93L94: `),Rl.add(e),r.on("close",()=>Rl.delete(e))}function Vw(r,e){X(e,{...gn,...Or,desktopEnabled:Ut,remoteAvailable:xh})}async function Kw(r,e){let{parseJsonBody:t}=await Promise.resol... L95: `)}});var cm=A(jE=>{"use strict";var BE=jE;BE.der=sm();BE.pem=LE()});var um=A((FG,WE)=>{"use strict";var Cj=zn(),kj=Qh(),FE=Hs().DecoderBuffer,qE=ru(),HE=nu();function $E(r){this.e... ... L108: `};ao.setupSocket(t),i&&i.length&&t.unshift(i);var c=(ao.isSSL.test(n.target.protocol)?i4:n4).request(ao.setupOutgoing(n.ssl||{},n,e));return s&&s.emit("proxyReqWs",c,e,t,n,i),c.on... L109: `)[0].replace(/\=|\s+|\"/gi,"").toLowerCase();case"win32":return I.toString().split("REG_SZ")[1].replace(/\r+|\n+|\s+/gi,"").toLowerCase();case"linux":return I.toString().replace(/... L110: `:`

High

Command Output Exfiltration

Source combines command execution, command-output handling, and outbound requests; review data flow before blocking.

dist/server.cjsView on unpkg · L93

1const __importMetaUrl = require('url').pathToFileURL(__filename).href; L2: var $O=Object.create;var Wa=Object.defineProperty;var UO=Object.getOwnPropertyDescriptor;var WO=Object.getOwnPropertyNames;var GO=Object.getPrototypeOf,zO=Object.prototype.hasOwnPr... L3: `)}catch{}}function Dp(r){return r.map(e=>{if(e instanceof Error)return e.stack||e.message;if(typeof e=="object")try{return JSON.stringify(e)}catch{return String(e)}return String(e... L4: === SESSION ${new Date().toISOString()} pid=${process.pid} argv=${process.argv.slice(2).join(" ")} ===`),yM())}function Kv(r){Lp=r}function Yv(r=60){try{return Br.default.readFileS... L5: `).filter(Boolean).slice(-r)}catch{return[]}}function On(r){return{info:(...e)=>vo(r,"info",Dp(e)),warn:(...e)=>vo(r,"warn",Dp(e)),error:(...e)=>vo(r,"error"

dist/assets/tray.ps1View file

•path = dist/assets/tray.ps1 kind = build_helper sizeBytes = 3954 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

dist/assets/tray.ps1View on unpkg

dist/ui/assets/index-BxhFJ5gG.jsView file

•path = dist/ui/assets/index-BxhFJ5gG.js kind = oversized_source_file sizeBytes = 2416319 magicHex = [redacted]

High

Oversized Source File

Package contains source files above the static scanner size ceiling.

dist/ui/assets/index-BxhFJ5gG.jsView on unpkg

Source & flagged code

11 flagged · loading source

package.jsonView file

•scripts.postinstall = node dist/install.cjs || true

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node dist/install.cjs || true

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

dist/install.cjsView file

2const __importMetaUrl = require('url').pathToFileURL(__filename).href; L3: var f=Object.create;var l=Object.defineProperty;var S=Object.getOwnPropertyDescriptor;var h=Object.getOwnPropertyNames;var p=Object.getPrototypeOf,b=Object.prototype.hasOwnProperty...

High

Child Process

Package source references child process execution.

dist/install.cjsView on unpkg · L2

Findings

1 Critical5 High7 Medium6 Low

CriticalPrevious Version Dangerous Deltadist/server.cjs

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processdist/install.cjs

HighSame File Env Network Executiondist/ptyDaemon.cjs

HighCommand Output Exfiltrationdist/server.cjs

HighOversized Source Filedist/ui/assets/index-BxhFJ5gG.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumDynamic Requiredist/ptyDaemon.cjs

MediumNetwork

MediumEnvironment Vars

MediumInstall Persistencedist/ptyDaemon.cjs

MediumShips Build Helperdist/assets/tray.ps1