Security Advisory

CVE-2024-39839

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2024-08-01 14:05:07
Last updated 2024-08-01 18:04:42
Assigner Mattermost
State PUBLISHED

Description

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to disallow users to set their own remote username, when shared channels were enabled, which allows a user on a remote to set their remote username prop to an arbitrary string, which would be then synced to the local server as long as the user hadnt been synced before.