CVE-2022-1982: Mattermost Server

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

Uncontrolled resource consumption in Mattermost version 6.6.0 and earlier allows an authenticated attacker to crash the server via a crafted SVG attachment on a post.

Affected products

• Mattermost Mattermost Server: from 5.0.0, before 6.3.8 (fixed in 6.3.8); from 6.4.0, before 6.4.3 (fixed in 6.4.3); version 6.5.0 only; version 6.6.0 only

Published 2022-06-02. Last modified 2026-06-17.