CVEs-PoC/2017/CVE-2017-0893.md

### [CVE-2017-0893](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0893)
![](https://img.shields.io/static/v1?label=Product&message=Nextcloud%20Server&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=before%209.0.58%20and%2010.0.5%20and%2011.0.3%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Improper%20Neutralization%20of%20Input%20During%20Web%20Page%20Generation%20('Cross-site%20Scripting')%20(CWE-79)&color=brightgreen)

### Description

Nextcloud Server before 9.0.58 and 10.0.5 and 11.0.3 are shipping a vulnerable JavaScript library for sanitizing untrusted user-input which suffered from a XSS vulnerability caused by a behaviour change in Safari 10.1 and 10.2. Note that Nextcloud employs a strict Content-Security-Policy preventing exploitation of this XSS issue on modern web browsers.

### POC

#### Reference
- https://hackerone.com/reports/222838

#### Github
- https://github.com/ARPSyndicate/cvemon