### [CVE-2016-9071](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9071)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2050%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Probe%20browser%20history%20via%20HSTS%2F301%20redirect%20%2B%20CSP&color=brighgreen)

### Description

Content Security Policy combined with HTTP to HTTPS redirection can be used by malicious server to verify whether a known site is within a user's browser history. This vulnerability affects Firefox < 50.

### POC

#### Reference
- http://www.securityfocus.com/bid/94337
- https://bugzilla.mozilla.org/show_bug.cgi?id=1285003

#### Github
No PoCs found on GitHub currently.