I hacked space x and rewarded 2500$ Bypassing Full Payment to Regain Internet Access

This bug has not been disclosed yet but has already been resolved, so I will share the three bugs I found and got validated. I will cover each bug in a separate write-up to make it easier to read.

Description:

I discovered a flaw in billing logic can lead to significant financial losses and service abuse. Recently, I discovered a vulnerability in Starlink’s billing system that allowed users to bypass full payment requirements and reactivate restricted accounts with minimal payments.

This bug could have led to substantial revenue loss if exploited at scale, prompting Starlink to implement a fix after my responsible disclosure. In this write-up, I’ll break down the vulnerability, its impact, and how it was mitigated

How the flow works?

When a user fails to pay their outstanding balance, Starlink restricts their account, cutting off internet access. The user must settle the full balance before service is restored

The bug: