Blog posts

2021

EN | Race Condition to Users Limit Bypass in Add User Function

In September of last year, I found a Race Condition vulnerability at an Online Services company located in the Netherlands. They had a private Zerocopter program and that’s why I was doing bug hunting based on web applications, on their systems. And I reported the…

2020

EN | Clickjacking to Account Takeover via Drag&Drop

In August of this year, I found a Clickjacking vulnerability in a dutch company. Later I realized that this vulnerability could be upgraded to Account Takeover. Then, I coded a PoC template with CSS and reported the vulnerability. And they fixed…

EN | Alert-box Message Content Manipulation based Base64

In July of this year, I found a Content Spoofing vulnerability in a Bitcoin Exchange company. The system was very simple, an encrypted text in a GET parameter was decrypted and reflected on the homepage in an alertbox. I know it’s…

EN | Stored XSS with Password Recovery Page

In April of this year, I found a Stored Xss vulnerability at University of Utwente. However, I later realized that there was a vendor of the vulnerable system, and I contacted them. Then they fixed this vuln. and rewarded me with a $$$ bounty. Also this was my first bounty…