GHSA-qwwm-c582-82rxMediumCVSS 4.3

Mattermost allows unauthorized channel member management through playbook runs

Published
June 20, 2025
Last Modified
June 20, 2025

🔗 CVE IDs covered (1)

CVE-2025-3227 →

📋 Description

Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly enforce channel member management permissions in playbook runs, allowing authenticated users without the 'Manage Channel Members' permission to add or remove users from public and private channels by manipulating playbook run participants when the run is linked to a channel.

🎯 Affected products7

  • go/github.com/mattermost/mattermost-server:< 0.0.0-20250520060012-d0380305ef7a
  • go/github.com/mattermost/mattermost/server/v8:< 8.0.0-20250520060012-d0380305ef7a
  • go/github.com/mattermost/mattermost/server/v8:>= 10.5.0, <= 10.5.5
  • go/github.com/mattermost/mattermost/server/v8:>= 9.11.0, <= 9.11.15
  • go/github.com/mattermost/mattermost/server/v8:= 10.8.0
  • go/github.com/mattermost/mattermost/server/v8:>= 10.7.0, <= 10.7.2
  • go/github.com/mattermost/mattermost/server/v8:>= 10.6.0, <= 10.6.5

🔗 References (3)