Brave Browser before 1.59.40 does not properly restrict the schema for WebUI factory and redirect. This is related to browser/brave_content_browser_client.cc and browser/ui/webui/brave_web_ui_controller_factory.cc.
An Open Redirect vulnerability exists prior to version 1.52.117, where the built-in QR scanner in Brave Browser Android navigated to scanned URLs automatically without showing the URL first. Now the user must manually navigate to the URL.
Brave Browser iOS before 1.2.18 and Brave Browser Android 1.9.56 and earlier suffer from Full Address Bar Spoofing, allowing attackers to trick a victim by displaying a malicious page for legitimate domain names.