cve/2021/CVE-2021-23364.md

### [CVE-2021-23364](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23364)
![](https://img.shields.io/static/v1?label=Product&message=browserslist&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3E%3D%204.0.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Regular%20Expression%20Denial%20of%20Service%20(ReDoS)&color=brighgreen)

### Description

The package browserslist from 4.0.0 and before 4.16.5 are vulnerable to Regular Expression Denial of Service (ReDoS) during parsing of queries.

### POC

#### Reference
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1277182
- https://snyk.io/vuln/SNYK-JS-BROWSERSLIST-1090194

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/engn33r/awesome-redos-security
- https://github.com/ken505/link-app