cve/2022/CVE-2022-2421.md

### [CVE-2022-2421](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2421)
![](https://img.shields.io/static/v1?label=Product&message=Socket.io-Parser&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=4.x%3C%204.2.1%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-89%20SQL%20Injection&color=brighgreen)

### Description

Due to improper type validation in attachment parsing the Socket.io js library, it is possible to overwrite the _placeholder object which allows an attacker to place references to functions at arbitrary places in the resulting query object.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/HotDB-Community/HotDB-Engine