CVEs-PoC/2020/CVE-2020-8138.md

### [CVE-2020-8138](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8138)
![](https://img.shields.io/static/v1?label=Product&message=Nextcloud%20Server&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Server-Side%20Request%20Forgery%20(SSRF)%20(CWE-918)&color=brighgreen)

### Description

A missing check for IPv4 nested inside IPv6 in Nextcloud server < 17.0.1, < 16.0.7, and < 15.0.14 allowed a Server-Side Request Forgery (SSRF) vulnerability when subscribing to a malicious calendar URL.

### POC

#### Reference
- https://hackerone.com/reports/736867

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