New Tab Override Firefox extension security report

This permission (Firefox) allows the extension to read and modify global browser settings, including proxy-adjacent networking, DNS-over-HTTPS and homepage configuration. Rated High because it can weaken browser security posture globally.

This permission provides full access to read and modify browser cookies. Rated High because it can steal session tokens, modify authentication cookies, and compromise accounts across websites.

This permission grants access to your complete browsing history. Rated High because it can track all visited websites, reveal sensitive browsing patterns, and expose private information.

This permission accesses recently closed tabs and windows. Rated High because it can monitor user activity, recover closed sensitive pages, and track browsing patterns.

This permission (Firefox) manages container tabs. Rated Medium because it can create, remove and inspect the identity containers that isolate a user's sessions from each other.

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 permission manages tab grouping functionality. Rated Medium because it can monitor tab organization, track user workflow patterns, and modify tab relationships.

This permission enables tab management and monitoring. Rated Medium because it can track open tabs, access tab metadata, and monitor user browsing patterns.

Host permission — access limited to this URL pattern.

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