Is Google MeetでのAI翻訳、文字起こし、議事録作成 safe?
google-meet%E3%81%A7%E3%81%AEai%E7%BF%BB%E8%A8%B3%E3%80%81%E6%96%87%E5%AD%97%E8%B5%B7%E3%81%93%E3%81%97%E3%80%81%E8%AD%B0 is high risk. When a signed-in user opens the overlay on a Google Meet page, the extension asks its service worker for every open tab's URL and sends that list to…
Who publishes itJotme Limited - 3 other listings from the same operator, 3 of them carrying a finding
Jotme Limited - 3 other listings from the same operator, 3 of them carrying a finding
What this publisher told the store about itself, and the other listings that told it the same thing.
Same store account
3 other listings published from this account, 10k+ users between them. 3 of them carry a finding.
AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.
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Findings
Google Meet overlay sends open-tab URLs to JotMe
When a signed-in user opens the overlay on a Google Meet page, the extension asks its service worker for every open tab's URL and sends that list to realtime.jotme.io over a WebSocket, linking unrelated pages to the Meet session.
- Severity
- High unwanted
- Type
- Unexpected
- CWE
- CWE-359
- Source
- Dynamic sandbox
You open the extension overlay while signed in on a Google Meet meeting page.
The overlay opens a WebSocket to the extension's realtime service for the meeting session.
The extension collects every open tab URL and sends the tab list to realtime.jotme.io.
The service worker returns all tab URLs, and the overlay packages them with version 3.22.0 and build JAMeetAssist.
WebSocket upgrade; a meetingMetrics frame was observed during dynamic analysis.
- Open tab URLhttps://docs.google.com/document/d/1QwErTyUiOpAsDfGhJkLzXcVbNm/edit (illustrative)
Shows the exact page address for one open browser tab, which can reveal private page paths, document names, or query text.
- Open-tab list[{"href":"https://mail.google.com/mail/u/0/#inbox"},{"href":"https://github.com/acme/private-repo/pulls"}] (illustrative)
Shows which unrelated sites were open at the same time as your Meet session.
- Extension version3.22.0
Ties the tab list to this specific extension build running in your browser.
- Build nameJAMeetAssist
Adds product context to the event that receives the tab list.
Every 10 seconds
After the realtime WebSocket opens, the meetingMetrics tab list is delayed by 10 seconds before it is sent.
Code path that collects all tab URLs and sends them over the WebSocket
Service worker returns every tab URL
service-worker.jschrome.runtime.onMessage.addListener((message, sender, sendResponse) => { async function handleMessage() { if (message !== "meetingMetrics") return; const tabs = (await chrome.tabs.query({})) .map((tab) => tab.url) .filter((url) => url !== undefined) .map((url) => ({ href: url })); sendResponse(tabs); } handleMessage();});Overlay sends the returned tab list
overlay/react/index.jsconst onRealtimeSocketOpen = function () { if (this.readyState === WebSocket.OPEN) { chrome.runtime.sendMessage("meetingMetrics", (tabs) => { const timestamp = new Date().toISOString(); const eventHeader = JSON.stringify({ event: "meetingMetrics", timestamp }); const payload = JSON.stringify({ tabs, version: "3.22.0", build: "JAMeetAssist", }); const frame = new Blob([eventHeader, "\n", payload]); setTimeout(() => { this.send(frame); }, 10000); }); pingTimer = setInterval(() => { const timestamp = new Date().toISOString(); const ping = JSON.stringify({ event: "ping", timestamp }); const frame = new Blob([ping, "\n"]); this.send(frame); }, 20000); sharedDocument.on("update", (update) => { const prefix = new Uint8Array([187]); const frame = new Uint8Array(prefix.length + update.length); frame.set(prefix, 0); frame.set(update, prefix.length); this.send(frame); }); }};Overlay connects to realtime.jotme.io
overlay/react/index.jsconst initialiseWebSocket = React.useCallback(() => { if ( !initialising && socket?.readyState !== WebSocket.OPEN && socket?.readyState !== WebSocket.CONNECTING && auth.access && auth.refresh ) { setInitialising(true); const encodedPathname = encodeURIComponent(window.location.pathname); const realtimeSocket = new WebSocket("wss://realtime.jotme.io", [ auth.access, encodedPathname, ]); realtimeSocket.onopen = onRealtimeSocketOpen; realtimeSocket.onmessage = onRealtimeMessage; realtimeSocket.onerror = onRealtimeError; realtimeSocket.onclose = makeReconnectHandler(setSocket, auth); setSocket(realtimeSocket); setInitialising(false); }}, [socket, auth, initialising]);- realtime.jotme.io
Receives the WebSocket session for the Google Meet overlay, including the meetingMetrics event that contains the open-tab URL list.
What it can do
Permissions this extension asks for, as declared in version 3.22.0. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.
Store data in your browser
storage
See the address and title of every tab you have open
tabs