CVEs-PoC/2021/CVE-2021-23444.md

### [CVE-2021-23444](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23444)
![](https://img.shields.io/static/v1?label=Product&message=jointjs&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%203.4.2%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Prototype%20Pollution&color=brighgreen)

### Description

This affects the package jointjs before 3.4.2. A type confusion vulnerability can lead to a bypass of CVE-2020-28480 when the user-provided keys used in the path parameter are arrays in the setByPath function.

### POC

#### Reference
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1655817
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1655816
- https://snyk.io/vuln/SNYK-JS-JOINTJS-1579578

#### Github
- https://github.com/dellalibera/dellalibera