CVE-2023-1776: Mattermost Server

Medium severity, CVSS 5.4. EPSS: 0.4% chance of exploitation in the next 30 days.

Boards in Mattermost allows an attacker to upload a malicious SVG image file as an attachment to a card and share it using a direct link to the file.

Affected products

• Mattermost Mattermost Server: before 7.1.6 (fixed in 7.1.6); version 7.7.1 only

Published 2023-03-31. Last modified 2026-06-17.