cve/2023/CVE-2023-45806.md

### [CVE-2023-45806](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-45806)
![](https://img.shields.io/static/v1?label=Product&message=discourse&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20%3C%203.1.3%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-1333%3A%20Inefficient%20Regular%20Expression%20Complexity&color=brighgreen)

### Description

Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the "bleeding" by ensuring users only use alphanumeric characters in their full name field.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/kip93/kip93