Microsoft Internet Explorer 6 through 8 does not properly restrict data access by VBScript, which allows remote attackers to perform cross-domain reading of JSON files via a crafted web site, aka "JSON Array Information Disclosure Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16518
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-037