CVE-2020-14452: Mattermost Server

Medium severity, CVSS 5.3. EPSS: 1.3% chance of exploitation in the next 30 days.

An issue was discovered in Mattermost Server before 5.21.0. mmctl allows directory traversal via HTTP, aka MMSA-2020-0014.

Affected products

• Mattermost Mattermost Server: before 5.21.0 (fixed in 5.21.0)

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