CVE-2019-20854: Mattermost Server

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

An issue was discovered in Mattermost Server before 5.17.0. It allows remote attackers to cause a denial of service (client-side application crash) via a LaTeX message.

Affected products

• Mattermost Mattermost Server: before 5.17.0 (fixed in 5.17.0)

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