Security Advisory

CVE-2026-20719

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-03-25 16:30:47
Last updated 2026-03-26 17:11:21
Assigner Mattermost
CVSS score 4.3
State PUBLISHED

Description

Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to prevent rendering of external SVGs on link embeds which allows unauthenticated users to crash the Mattermost webapp and desktop app via creating an issue or PR on GitHub.. Mattermost Advisory ID: MMSA-2026-00595