How to find uncommon bugs via manual testing.
(thread)
1. There are two types of users, admin and normal user.
2. Admin user has a functionality to edit comments, while the normal user does not.
3. Capturing an admin request to modify a comment, and replacing session token with the one of the normal users, and VOILA.
Comment has been edited successfully.
4. I've made a video in which I go into detailed description about this bug.