Bitwarden Password ManagerSecurity Analysis

Extension intercepts network traffic and sends data externally — potential man-in-the-middle behavior.

Extension reads clipboard and communicates externally — potential credential or crypto address theft.

Extension communicates with native apps and executes dynamic code — potential sandbox escape vector.

Injects and executes scripts in web pages programmatically.

Reads clipboard contents via the Clipboard API — can access copied passwords, crypto addresses, or sensitive data.

Dynamically sets a script's src attribute to load external code at runtime.

Creates functions from strings, similar to eval(), often used to hide malicious code.

Dynamically creates script elements, potentially loading external malicious code.

Creates a function from a string (new Function()), similar to eval().

Object.defineProperty() called on window — can intercept and override built-in browser APIs.

JavaScript files are accessible to ALL websites. Any page can load and interact with these scripts, enabling web→extension attacks.

Content script runs at document_start in ALL frames on ALL URLs. This gives the extension deep access to every page load, including iframes.

Sends messages via Chrome runtime, could communicate with external services.

Modifies window.location to redirect the user, potentially to phishing or malicious pages.

Decodes base64 data, commonly used to hide malicious payloads.

Uses XMLHttpRequest to make network calls.

Dynamically creates iframe elements, which can be used to load external content or hide malicious UI.

JavaScript file could not be parsed and has high entropy. May contain obfuscated code.

Line exceeds 5000 characters (entropy: 5.17462038007564)

Web-accessible resources use <all_urls> or wildcard patterns, exposing resources to every website.

Content script matches <all_urls>, executing on every website the user visits.

Extension uses tab tracking APIs (onUpdated/query) and communicates with external servers — potential browsing surveillance.

Creates a Web Worker, which runs code in a separate thread — can be used for background computation or crypto mining.

Sets innerHTML directly, which can lead to XSS if used with untrusted data.

Reads or writes to localStorage, which may contain sensitive site data.

Encodes data to base64, may be used for data exfiltration.

String with entropy 6 bits — may be encoded/encrypted data

object-src is not set to 'none'. Plugins like Flash can be embedded, which may allow code execution.

JavaScript file could not be parsed. Likely minified or bundled code.

popup/vendor-angular.js

popup/vendor-angular.js

content/bootstrap-autofill-overlay-menu.js

content/bootstrap-autofill-overlay.js

content/bootstrap-autofill-overlay-notifications.js