cve/2023/CVE-2023-23936.md

### [CVE-2023-23936](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-23936)
![](https://img.shields.io/static/v1?label=Product&message=undici&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20%3E%3D2.0.0%2C%20%3C%205.19.1%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-93%3A%20Improper%20Neutralization%20of%20CRLF%20Sequences%20('CRLF%20Injection')&color=brighgreen)

### Description

Undici is an HTTP/1.1 client for Node.js. Starting with version 2.0.0 and prior to version 5.19.1, the undici library does not protect `host` HTTP header from CRLF injection vulnerabilities. This issue is patched in Undici v5.19.1. As a workaround, sanitize the `headers.host` string before passing to undici.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/Extiri/extiri-web