GHSA-cmc8-222c-vqp9CriticalCVSS 8.7

Mattermost failed to properly validate that the channel that comes from the sync message is a shared channel

Published
August 1, 2024
Last Modified
November 18, 2024

🔗 CVE IDs covered (1)

CVE-2024-39274 →

📋 Description

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to properly validate that the channel that comes from the sync message is a shared channel, when shared channels are enabled, which allows a malicious remote to add users to arbitrary teams and channels

🎯 Affected products4

  • go/github.com/mattermost/mattermost/server/v8:>= 9.5.0, < 9.5.7
  • go/github.com/mattermost/mattermost/server/v8:>= 9.7.0, < 9.7.6
  • go/github.com/mattermost/mattermost/server/v8:>= 9.8.0, < 9.8.2
  • go/github.com/mattermost/mattermost/server/v8:= 9.9.0

🔗 References (4)