---
id: "MAL-2026-13416"
kind: "package"
aliases: ["MAL-2026-13416"]
title: "Malicious code in @bananacool467/ui-tools (npm)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "withdrawn"
category: "package"
products: [{"name": "@bananacool467/ui-tools", "fixed": [], "affected": "= 0.1.4-beta; = 0.1.0-beta; = 0.1.7-beta; = 0.1.3-beta; = 0.1.1-beta; = 0.1.5-beta; = 0.1.2-beta; = 0.1.6-beta", "ecosystem": "npm"}]
ecosystems: ["npm"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-08-06T13:54:59+00:00"
first_seen_at: "2026-11-02T04:51:15+00:00"
updated_at: "2026-11-02T04:52:17+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-13416", "first_seen_at": "2026-11-02T04:51:15+00:00"}]
---

# Malicious code in @bananacool467/ui-tools (npm)

## Affected

- npm:@bananacool467/ui-tools affected = 0.1.4-beta; = 0.1.0-beta; = 0.1.7-beta; = 0.1.3-beta; = 0.1.1-beta; = 0.1.5-beta; = 0.1.2-beta; = 0.1.6-beta fixed ?

## Timeline

- 2026-11-02T04:51:15+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-13416

## From the sources

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_-= Per source details. Do not edit below this line.=-_

## Source: amazon-inspector (b8497bfe55fd379ac7c87c73e99e8c532193a17516996d9ae6cfb856b84a052a)
The package advertises itself as a UI-components library (README compares it to MUI), but its main export surface includes `useTerminal`, a server-side middleware that stands up a WebSocketServer (default path `/terminal-stream`) and, on every incoming WS message, spawns an interactive bash/powershell PTY via `pty.spawn` with the server process's own environment (`{...process.env, TERM: 'xterm-256color'}`) and cwd set to the user's home directory. Bytes received from the WebSocket are written directly into the PTY (`session.ptyProcess.write(parsed.data)`, with a fallback that writes raw message bytes), and PTY output is streamed back to the socket. No authentication, origin check, or handshake token gates the connection. `dist/terminal.js` ships the matching browser client (exported as `Terminal`) that connects to that same WebSocket and pipes keystrokes as `{type:'input', data:...}`, so the package ships both ends of a remote-shell channel. A consumer who mounts the exported hook — expecting a UI helper — exposes a full unauthenticated interactive shell on their server, executing as the server process. The mismatch between the marketed purpose (UI kit) and the shipped capability (network-driven RCE) is the shape of a backdoor delivered under a benign cover story.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_