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 are defending an asset, implement these measures immediately: hacktricks port 3000
Look for mutations like deleteUser , updateRole , or queries like internalLogs . This is a classic privilege escalation vector. The common thread