Remote debugging port binding limits in puppeteer.launch

Browser Control Surface Exposure

When initializing a browser instance via puppeteer.launch, the library allows the configuration of Chromium launch arguments. A critical security consideration involves the remote debugging port, which provides an unauthenticated interface for browser control.

While Puppeteer manages the browser process, the binding of this debugging port to specific network interfaces is not abstracted by the library's high-level API. If the underlying Chromium process binds to a public-facing interface rather than localhost, the browser control surface may be exposed to external networks.

Given that Puppeteer passes launch arguments directly to the browser process, there is uncertainty regarding the default binding behavior across different operating systems and environments.

• Does Puppeteer enforce a default localhost binding for the remote debugging port?
• What is the recommended configuration to ensure the debugging interface remains inaccessible to external network traffic?