CVE-2024-42000 Information

Description

Mattermost versions 9.10.x <= 9.10.2 9.11.x <= 9.11.1 9.5.x <= 9.5.9 and 10.0.x <= 10.0.0 fail to properly authorize the requests to /api/v4/channels  which allows a User or System Manager with \Read Groups\ permission but with no access for channels to retrieve details about private channels that they were not a member of by sending a request to /api/v4/channels.

Reference

https://mattermost.com/security-updates