universal-xss

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Security researcher Vladimir Metnew discovered 3 XSS vulnerabilities in ProtonMail's iOS app: one in applewebdata: origin via SVG onload, another via javascript: URI anchor tag, and a third in data: origin via embedded base64-encoded HTML. While initially dismissed by ProtonMail as non-critical, the vulnerabilities enabled UXSS execution and potential privacy violations including email tracking and IP disclosure.

ProtonMail Vladimir Metnew DOMPurify Cure53 CVE-2016-1764 Webkit Safiler Anatoly Andy Yen
medium.com · devanshbatham/Awesome-Bugbounty-Writeups · 14 hours ago · details