GHSA-3mw5-466q-295qMediumCVSS 6.8

Mattermost allows system administrators to read arbitrary host files via malicious AdvancedLoggingJSON configuration

Published
March 26, 2026
Last Modified
March 31, 2026

🔗 CVE IDs covered (1)

CVE-2026-3112 →

📋 Description

Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to validate Advanced Logging file target paths which allows system administrators to read arbitrary host files via malicious AdvancedLoggingJSON configuration in support packet generation. Mattermost Advisory ID: MMSA-2025-00562.

🎯 Affected products5

  • go/github.com/mattermost/mattermost/server/v8:>= 11.4.0-rc1, < 11.4.1
  • go/github.com/mattermost/mattermost/server/v8:>= 11.3.0-rc1, < 11.3.2
  • go/github.com/mattermost/mattermost/server/v8:>= 11.2.0-rc1, < 11.2.4
  • go/github.com/mattermost/mattermost/server/v8:>= 10.11.0-rc1, < 10.11.12
  • go/github.com/mattermost/mattermost/server/v8:>= 8.0.0-20260105080200-d27a2195068d, < 8.0.0-20260217110922-b7d4a1f1f59b

🔗 References (3)