Firefox Relay Firefox extension security report

Broad host access — the extension can read/modify content on every website.

The following context increases the overall risk:• 20% increase: Access to sensitive domains increases potential impact• 10% increase: Early script execution enables pre-emptive content manipulation• 15% increase: Older manifest version lacks modern security controls

This extension has broad host permissions allowing it to access many or all websites.

This extension can inject scripts into any website.

This permission allows storing data locally in the browser. Rated Medium because it can persist sensitive user data, track user activities over time, and potentially store malicious payloads.

This extension requests access to sensitive domains: https://relay.firefox.com/accounts/settings/**

This extension runs content scripts at document_start.

This extension uses Manifest Version 2

This permission (Firefox) adds items to browser context menus. Rated Low because it only modifies right-click menus without access to page content.

This permission adds items to browser context menus. Rated Medium because it only modifies right-click menus without access to page content.