cve/2024/CVE-2024-6844.md

### [CVE-2024-6844](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-6844)
![](https://img.shields.io/static/v1?label=Product&message=corydolphin%2Fflask-cors&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-840%20Business%20Logic%20Errors&color=brightgreen)

### Description

A vulnerability in corydolphin/flask-cors version 4.0.1 allows for inconsistent CORS matching due to the handling of the '+' character in URL paths. The request.path is passed through the unquote_plus function, which converts the '+' character to a space ' '. This behavior leads to incorrect path normalization, causing potential mismatches in CORS configuration. As a result, endpoints may not be matched correctly to their CORS settings, leading to unexpected CORS policy application. This can cause unauthorized cross-origin access or block valid requests, creating security vulnerabilities and usability issues.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/w4zu/Debian_security