Exploiting 2 race conditions to get a paid feature for free. Race conditions Race conditions might be hard to exploit sometimes. However, these can have a high impact and are always worth looking for. Before you start reading, please take a look at how race conditions can happen and how to mitigate them. **Background** The program was a podcast hosting service where you can host your own podcasts, manage it, and release episodes.. the program has a feature that is called "invite a team member where you can invite other users to manage the podcast with you." For free plan users, you can invite one member only. To invite more than one member, you have to subscribe to one of the premium plans. **The first exploit** Now, the program usually limits you after issuing the first invite. So we first need to be able to have multiple invites. To do this, I just intercepted the invite request and sent it to the repeater.…