YouTube Dark Theme Firefox extension security report

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.

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

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.

Host permission — access limited to this URL pattern.

This extension runs content scripts at document_start.

This extension uses Manifest Version 2

This permission schedules periodic tasks. Rated Low because it can only trigger events at specified times without access to sensitive data.

This permission detects system idle state. Rated Low because it only observes user activity state without access to activity details.