Permissions, Privileges, and Access Controls
The Chrome Instant feature in Google Chrome before 48.0.2564.109 does not ensure that a New Tab Page (NTP) navigation target is on the most-visited or suggestions list, which allows remote attackers to bypass intended restrictions via unspecified vectors, related to instant_service.cc and search_tab_helper.cc.
CWE-264 - Permissions Privileges and Access Controls
CWE 264 (permissions, privileges, and access controls) is not a weakness in and of itself, rather it is a category of weaknesses related to the management of permissions, privileges, and other security features used to perform access control. If not addressed, the weaknesses in this category allow attackers to gain privileges for an unintended sphere of control, access sensitive information, and execute arbitrary commands.