### [CVE-2021-24153](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-24153)
![](https://img.shields.io/static/v1?label=Product&message=Yoast%20SEO&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=3.4.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-79%20Cross-site%20Scripting%20(XSS)&color=brightgreen)

### Description

A Stored Cross-Site Scripting vulnerability was discovered in the Yoast SEO WordPress plugin before 3.4.1, which had built-in blacklist filters which were blacklisting Parenthesis as well as several functions such as alert but bypasses were found.

### POC

#### Reference
- https://packetstormsecurity.com/files/138192/

#### Github
- https://github.com/20142995/nuclei-templates