Umbra - Browser Control for AI Agents Chrome extension security report

This permission allows injection and execution of JavaScript on any webpage. Rated Critical because it can modify page content, steal sensitive data, and inject malicious code into any site the extension has access to.

This permission grants the extension ability to debug and control other extensions and browser tabs. Rated Critical because it can access and modify other extensions' internal state, inject code, and access sensitive data from any tab.

This permission creates hidden browser documents with full DOM access. Rated High because it can run background operations invisibly, potentially executing malicious code without user awareness.

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.

This permission grants temporary access to the current tab. Rated Medium because it can access current page content when invoked, though limited to user-initiated actions.

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

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