case-sensitivity-bypass

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A reflected XSS vulnerability was discovered on Yahoo Finance's mobile version via the /quote/ endpoint. The attacker bypassed filters that converted lowercase characters to uppercase by using HTML entity encoding (e.g., a for 'a') to evade the case-sensitivity filter and successfully execute JavaScript.

finance.yahoo.com Samuel Yahoo
medium.com · devanshbatham/Awesome-Bugbounty-Writeups · 22 hours ago · details