### [CVE-2021-3915](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3915)
![](https://img.shields.io/static/v1?label=Product&message=bookstackapp%2Fbookstack&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=unspecified%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-434%20Unrestricted%20Upload%20of%20File%20with%20Dangerous%20Type&color=brightgreen)

### Description

bookstack is vulnerable to Unrestricted Upload of File with Dangerous Type

### POC

#### Reference
- https://huntr.dev/bounties/fcb65f2d-257a-46f4-bac9-f6ded5649079

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