CVE-2016-11063: Mattermost Server

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

An issue was discovered in Mattermost Server before 3.5.1. XSS can occur via file preview.

Affected products

• Mattermost Mattermost Server: before 3.5.1 (fixed in 3.5.1)

Published 2020-06-19. Last modified 2026-06-17.