How did I found multiple reflected cross-site scripting (rXSS) vulnerabilities on Facebook

Hello, World! ❤️

Welcome to my another blog post. I hope you all are doing well and safe. This post is about the reflected cross-site scripting (rXSS) vulnerabilities I found on Facebook. I suggest you read my previous article before reading this one, which is how I found several SSRFs on Facebook server where a vulnerable third-party business intelligence portal (MicroStrategy Web SDK) was deployed. If you read that article first, then, it will be easier to understand.

This post is about some complex rXSS I found on Facebook that was a little difficult to detect and exploit. As already…

How did I found SSRF in Facebook — the story of my first bug bounty

Hello World ❤️,

Facebook is the largest social networking site in the world and one of the most widely used. I have always been interested in testing the security of Facebook. During the sub domain enumeration, I’ve got a sub domain which is “". It redirects me to “" observe below screenshot:

I quickly Google keyword mstrWebAdmin and I observed that this is the Business Intelligence Portal that is built on MicroStrategy’s tools:

Bipin Jitiya

Security Enthusiast | Professional Penetration Tester | Web & Mobile Application Developer | Reverse Engineer | Learn more at

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