Yoroi Firefox extension security report

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• 25% increase: Unsafe code evaluation capabilities increase attack surface

This extension's CSP allows "wasm-unsafe-eval".

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 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 extension requests access to sensitive domains: *://connect.trezor.io/*, *://connect.trezor.io/*/popup.html*

This extension runs content scripts at document_start.

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

This permission reads display configuration. Rated Low because it only accesses screen properties without content access.