CVEs-PoC/2021/CVE-2021-37862.md

### [CVE-2021-37862](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37862)
![](https://img.shields.io/static/v1?label=Product&message=Mattermost%20&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=unspecified%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 6.0 and earlier fails to sufficiently validate the email address during registration, which allows attackers to trick users into signing up using attacker-controlled email addresses via crafted invitation token.

### POC

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

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