CVEs-PoC/2022/CVE-2022-21189.md

### [CVE-2022-21189](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21189)
![](https://img.shields.io/static/v1?label=Product&message=dexie&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%203.2.2%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Prototype%20Pollution&color=brighgreen)

### Description

The package dexie before 3.2.2, from 4.0.0-alpha.1 and before 4.0.0-alpha.3 are vulnerable to Prototype Pollution in the Dexie.setByKeyPath(obj, keyPath, value) function which does not properly check the keys being set (like __proto__ or constructor). This can allow an attacker to add/modify properties of the Object.prototype leading to prototype pollution vulnerability. **Note:** This vulnerability can occur in multiple ways, for example when modifying a collection with untrusted user input.

### POC

#### Reference
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2805308
- https://snyk.io/vuln/SNYK-JS-DEXIE-2607042

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