Is Tab Merge safe?

Medium risk

Tab Merge sends all complete current-window tab URLs to the first tab's origin when you click its toolbar button.

When you click Tab Merge, it reads the URLs of every fully loaded tab in the current window and opens a new tab using the first tab's URL with the full URL list appended. If the first tab is controlled by another site, that site can receive the other tab URLs in the navigation URL.

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

Nikolay Gechevv2.2.1Chrome Web Store
42Risk

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 2.2.1. 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>

Where it sends data

Destinations our analysis observed Tab Merge 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.

  • attacker-controlled first tab URL

    Tab Merge sends data to attacker-controlled first tab URL. Named as a recipient in this extension's own analysis.

Updated 30 September 2026olcjnbnibcfbehmfnkomljcgelbggjkf