cve/2023/CVE-2023-4478.md

### [CVE-2023-4478](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4478)
![](https://img.shields.io/static/v1?label=Product&message=Mattermost&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-74%20Improper%20Neutralization%20of%20Special%20Elements%20in%20Output%20Used%20by%20a%20Downstream%20Component%20('Injection')&color=brighgreen)

### Description

Mattermost fails to restrict which parameters' values it takes from the request during signup allowing an attacker to register users as inactive, thus blocking them from later accessing Mattermost without the system admin activating their accounts.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/fkie-cad/nvd-json-data-feeds
Update Sat May 25 21:48:12 CEST 2024 2024-05-25 21:48:12 +02:00			`### [CVE-2023-4478](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4478)`
			`![](https://img.shields.io/static/v1?label=Product&message=Mattermost&color=blue)`
			`![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)`
			`![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-74%20Improper%20Neutralization%20of%20Special%20Elements%20in%20Output%20Used%20by%20a%20Downstream%20Component%20('Injection')&color=brighgreen)`

			`### Description`

			`Mattermost fails to restrict which parameters' values it takes from the request during signup allowing an attacker to register users as inactive, thus blocking them from later accessing Mattermost without the system admin activating their accounts.`

			`### POC`

			`#### Reference`
			`No PoCs from references.`

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