Is User-Agent Switcher and Manager safe?

Medium risk

User-Agent Switcher and Manager fetches its agent list from cdn.jsdelivr.net at an unpinned @latest reference with no integrity check.

The extension lets users spoof the User-Agent header on outgoing requests. When the popup opens, it fetches the list of available user-agent strings from cdn.jsdelivr.net pointing at the @latest tag of the author's GitHub repository, with no subresource integrity check. This means any update to that repository is automatically picked up by the extension without a version bump or user consent.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

44Risk
Who publishes it

Ray - no other listings under this identity, 2 shared hostnames

What this publisher told the store about itself, and the other listings that told it the same thing.

Shared hosts - 2 hostnames

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

statusnest.com
Also called by 2 other listings: User-Agent Switcher and Manager, Custom UserAgent String
bytedance.sg.larkoffice.com
Also called by 4 other listings, including User-Agent Switcher and Manager

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 0.7.2. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on every site you visit

    <all_urls>

  • Store data in your browser

    storage

  • Add items to the right-click menu

    contextMenus

  • Run its own code inside the pages you visit

    scripting

  • Watch every request your browser makes

    webRequest

declarativeNetRequestWithHostAccess

Where it sends data

Destinations our analysis observed User-Agent Switcher and Manager contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • cdn.jsdelivr.netwidely used

    User-Agent Switcher and Manager sends data to cdn.jsdelivr.net. A widely used service: 35 other extensions we have analyzed send data here.

Updated 2 November 2026amo-853731