cve/2021/CVE-2021-23406.md

### [CVE-2021-23406](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23406)
![](https://img.shields.io/static/v1?label=Product&message=pac-resolver&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%205.0.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Remote%20Code%20Execution%20(RCE)&color=brighgreen)

### Description

This affects the package pac-resolver before 5.0.0. This can occur when used with untrusted input, due to unsafe PAC file handling. **NOTE:** The fix for this vulnerability is applied in the node-degenerator library, a dependency written by the same maintainer.

### POC

#### Reference
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1568506
- https://snyk.io/vuln/SNYK-JS-PACRESOLVER-1564857

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