GHSA-82j6-4fq7-fx62HighCVSS 7.6

Mattermost doesn't sanitize sensitive configuration fields in the Mattermost Calls plugin

Published
May 18, 2026
Last Modified
June 1, 2026

🔗 CVE IDs covered (1)

CVE-2026-6347 →

📋 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 in the Mattermost Calls plugin which allows an attacker with access to a support packet to obtain TURN server credentials via the plaintext values present in the exported plugin configuration.. Mattermost Advisory ID: MMSA-2026-00605

🎯 Affected products4

  • go/github.com/mattermost/mattermost-server:>= 11.5.0, < 11.5.2
  • go/github.com/mattermost/mattermost-server:>= 10.11.0, < 10.11.14
  • go/github.com/mattermost/mattermost-server:>= 11.4.0, < 11.4.4
  • go/github.com/mattermost/mattermost-plugin-calls:< 1.12.0-rc2

🔗 References (4)