CVE-2024-6428 Information

Description

Mattermost versions 9.8.0 9.7.x <= 9.7.4 9.6.x <= 9.6.2 9.5.x <= 9.5.5 fail to prevent specifying a RemoteId when creating a new user which allows an attacker to specify both a remoteId and the user ID resulting in creating a user with a user-defined user ID. This can cause some broken functionality in User Management such administrative actions against the user not working.

Reference

https://mattermost.com/security-updates