GHSA-x67c-v8jr-p29rMediumCVSS 6.8

Mattermost Fails to Sanitize Path Traversal Sequences

Published
August 21, 2025
Last Modified
August 29, 2025

🔗 CVE IDs covered (1)

CVE-2025-8023 →

📋 Description

Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2 fails to sanitize path traversal sequences in template file destination paths, which allows a system admin to perform path traversal attacks via malicious path components, potentially enabling malicious file placement outside intended directories.

🎯 Affected products7

  • go/github.com/mattermost/mattermost-server:>= 10.8.0, <= 10.8.3
  • go/github.com/mattermost/mattermost-server:>= 10.5.0, <= 10.5.8
  • go/github.com/mattermost/mattermost-server:>= 9.11.0, <= 9.11.17
  • go/github.com/mattermost/mattermost-server:>= 10.9.0, <= 10.9.2
  • go/github.com/mattermost/mattermost/server/v8:< 8.0.0-20250708065844-b38e2eccda18
  • go/github.com/mattermost/mattermost-server/v5:<= 5.39.5
  • go/github.com/mattermost/mattermost-server/v6:<= 6.7.2

🔗 References (4)