cve/2021/CVE-2021-41917.md

### [CVE-2021-41917](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41917)
![](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

webTareas version 2.4 and earlier allows an authenticated user to store arbitrary web script or HTML by creating or editing a client name in the clients section, due to incorrect sanitization of user-supplied data and achieve a Stored Cross-Site Scripting attack against the platform users and administrators. The affected endpoint is /clients/editclient.php, on the HTTP POST cn parameter.

### POC

#### Reference
- https://n4nj0.github.io/advisories/webtareas-multiple-vulnerabilities-i/

#### Github
No PoCs found on GitHub currently.