cve/2023/CVE-2023-2787.md

### [CVE-2023-2787](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2787)
![](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-862%20Missing%20Authorization&color=brighgreen)

### Description

Mattermost fails to check channel membership when accessing message threads, allowing an attacker to access arbitrary posts by using the message threads API.

### POC

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

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