Hacktricks Port 3000 -

: Front-end frameworks often use this port to host dev environments.

: BI tools and network traffic monitors also commonly listen here. 2. Enumeration and Information Gathering hacktricks port 3000

: Affects versions 8.0.0-beta1 through 8.3.0, allowing attackers to read arbitrary files from the server. Default Credentials : Check for admin:admin . : Front-end frameworks often use this port to

In vulnerable versions (e.g., webpack-dev-server < 3.1.0), this leads to remote JavaScript execution on all connected clients (stored XSS / RCE on dev machines). Enumeration and Information Gathering : Affects versions 8

The common thread? Development servers. Developers often run production applications on port 80/443 but leave debugging interfaces, hot-reloaders, and verbose error handling exposed on port 3000—both locally and, accidentally, to the internet.

If you have searched for , you are likely in the middle of a penetration test, a CTF challenge, or a bug bounty hunt. You have discovered an open TCP port 3000 on a target machine and want to know exactly how to break it.

If the playground loads, run introspection queries to dump the entire schema: