GHSA-9p64-jpc7-m2rpHighCVSS 8.7

Mattermost doesn't sanitize sensitive configuration fields before including them in support packet generation

Published
May 18, 2026
Last Modified
June 1, 2026

🔗 CVE IDs covered (1)

CVE-2026-6346 →

📋 Description

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to sanitize sensitive configuration fields before including them in support packet generation, which allows a Mattermost System Admin or any party with access to a support packet to obtain sensitive credentials in plaintext via downloading a support packet from the System Console.. Mattermost Advisory ID: MMSA-2026-00607

🎯 Affected products5

  • go/github.com/mattermost/mattermost/server/v8:>= 11.5.0, < 11.5.2
  • go/github.com/mattermost/mattermost/server/v8:>= 10.11.0, < 10.11.14
  • go/github.com/mattermost/mattermost/server/v8:>= 11.4.0, < 11.4.4
  • go/github.com/mattermost/mattermost/server/v8:< 8.0.0-20260326202606-fac92f4a71f3
  • go/github.com/mattermost/mattermost-server:< 5.3.2-0.20260326202606-fac92f4a71f3

🔗 References (4)