Unicode Normalization Leads to Account Takeover

Hello everyone,

I found a flaw that gave me access to user accounts by using Unicode normalization during my security analysis of the web application.

Summary:

A system security vulnerability that allows attackers to perform an account takeover attack.The problem comes as a result of the system’s absence of sufficient Unicode normalization tests.Attackers can take advantage of this flaw to circumvent security measures and obtain unauthorized access to user accounts.

What is a Unicode character?

account account takeover bug bounty cryptocurrency cybersecurity hacking penetration testing takeover unicode