An issue existed in the drawing of web page elements. The issue was addressed with improved logic. This issue is fixed in iOS 13.1 and iPadOS 13.1, macOS Catalina 10.15. Visiting a maliciously crafted website may reveal browsing history.
Exploitability
AV:NAC:LPR:NUI:RScope
S:UImpact
C:LI:NA:N4.3/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N