### [CVE-2024-11599](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-11599)
![](https://img.shields.io/static/v1?label=Product&message=Mattermost&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=10.0.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=10.1.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=9.11.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=9.5.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-754%20Improper%20Check%20for%20Unusual%20or%20Exceptional%20Conditions&color=brightgreen)

### Description

Mattermost versions 10.0.x <= 10.0.1, 10.1.x <= 10.1.1, 9.11.x <= 9.11.3, 9.5.x <= 9.5.11 fail to properly validate email addresses which allows an unauthenticated user to bypass email domain restrictions via carefully crafted input on email registration.

### POC

#### Reference
- https://mattermost.com/security-updates

#### Github
No PoCs found on GitHub currently.