cve/2017/CVE-2017-20146.md

### [CVE-2017-20146](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-20146)
![](https://img.shields.io/static/v1?label=Product&message=github.com%2Fgorilla%2Fhandlers&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=0%3C%201.3.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE%20284%3A%20Improper%20Access%20Control&color=brighgreen)

### Description

Usage of the CORS handler may apply improper CORS headers, allowing the requester to explicitly control the value of the Access-Control-Allow-Origin header, which bypasses the expected behavior of the Same Origin Policy.

### POC

#### Reference
- https://github.com/gorilla/handlers/pull/116

#### Github
- https://github.com/Live-Hack-CVE/CVE-2017-20146