cve/2021/CVE-2021-33620.md

### [CVE-2021-33620](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33620)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/MegaManSec/Squid-Security-Audit