cve/2023/CVE-2023-43804.md

### [CVE-2023-43804](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-43804)
![](https://img.shields.io/static/v1?label=Product&message=urllib3&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20%3E%3D%202.0.0%2C%20%3C%202.0.6%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-200%3A%20Exposure%20of%20Sensitive%20Information%20to%20an%20Unauthorized%20Actor&color=brighgreen)

### Description

urllib3 is a user-friendly HTTP client library for Python. urllib3 doesn't treat the `Cookie` HTTP header special or provide any helpers for managing cookies over HTTP, that is the responsibility of the user. However, it is possible for a user to specify a `Cookie` header and unknowingly leak information via HTTP redirects to a different origin if that user doesn't disable redirects explicitly. This issue has been patched in urllib3 version 1.26.17 or 2.0.5.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/JawadPy/CVE-2023-43804-Exploit
- https://github.com/PBorocz/raindrop-io-py
- https://github.com/fkie-cad/nvd-json-data-feeds
- https://github.com/mmbazm/device_api
- https://github.com/nomi-sec/PoC-in-GitHub
- https://github.com/seal-community/patches