cve/2021/CVE-2021-3758.md

### [CVE-2021-3758](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3758)
![](https://img.shields.io/static/v1?label=Product&message=bookstackapp%2Fbookstack&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2021.08%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-918%20Server-Side%20Request%20Forgery%20(SSRF)&color=brighgreen)

### Description

bookstack is vulnerable to Server-Side Request Forgery (SSRF)

### POC

#### Reference
- https://huntr.dev/bounties/a8d7fb24-9a69-42f3-990a-2db93b53f76b

#### Github
- https://github.com/ExpLangcn/FuYao-Go