CVE-2022-3147: Mattermost Server

Medium severity, CVSS 6.5. EPSS: 1% chance of exploitation in the next 30 days.

Mattermost version 7.0.x and earlier fails to sufficiently limit the in-memory sizes of concurrently uploaded JPEG images, which allows authenticated users to cause resource exhaustion on specific system configurations, resulting in server-side Denial of Service.

Affected products

• Mattermost Mattermost Server: before 7.1.0 (fixed in 7.1.0)

Published 2022-09-09. Last modified 2026-06-17.