GHSA-r4fm-g65h-cr54LowCVSS 3.1

Mattermost incorrectly allows access individual posts

Published
February 29, 2024
Last Modified
March 21, 2026

🔗 CVE IDs covered (1)

📋 Description

Mattermost version 8.1.x before 8.1.9 fails to sanitize data associated with permalinks when a plugin updates an ephemeral post, allowing an authenticated attacker who can control the ephemeral post update to access individual posts' contents in channels they are not a member of.

🎯 Affected products1

  • go/github.com/mattermost/mattermost/server/v8:>= 9.0.0, < 9.4.0

🔗 References (3)