Exposure of Sensitive Information to an Unauthorized Actor
WebKit in Apple iOS before 9.2 and Safari before 9.0.2 misparses content extensions, which allows remote attackers to obtain sensitive browsing-history information via a crafted web site.
CWE-200 - Information Exposure
An information exposure vulnerability is categorized as an information flow (IF) weakness, which can potentially allow unauthorized access to otherwise classified information in the application, such as confidential personal information (demographics, financials, health records, etc.), business secrets, and the application's internal environment.