cve/2023/CVE-2023-30591.md

### [CVE-2023-30591](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-30591)
![](https://img.shields.io/static/v1?label=Product&message=NodeBB&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=0%3C%3D%202.8.10%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-241%3A%20Improper%20Handling%20of%20Unexpected%20Data%20Type&color=brighgreen)

### Description

Denial-of-service in NodeBB <= v2.8.10 allows unauthenticated attackers to trigger a crash, when invoking `eventName.startsWith()` or `eventName.toString()`, while processing Socket.IO messages via crafted Socket.IO messages containing array or object type for the event name respectively.

### POC

#### Reference
- https://starlabs.sg/advisories/23/23-30591/

#### Github
- https://github.com/fkie-cad/nvd-json-data-feeds