### [CVE-2018-3762](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-3762)
![](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=Improper%20Access%20Control%20-%20Generic%20(CWE-284)&color=brighgreen)

### Description

Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to.

### POC

#### Reference
- https://hackerone.com/reports/358339
- https://hackerone.com/reports/358339

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