Security Advisory

CVE-2026-3108

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-03-26 16:16:49

Last updated 2026-03-27 03:55:41

Assigner Mattermost

State PUBLISHED

Description

Mattermost versions 11.2.x <= 11.2.2, 10.11.x <= 10.11.10, 11.4.x <= 11.4.0, 11.3.x <= 11.3.1 fail to sanitize user-controlled post content in the mmctl commands terminal output which allows attackers to manipulate administrator terminals via crafted messages containing ANSI and OSC escape sequences that enable screen manipulation, fake prompts, and clipboard hijacking.. Mattermost Advisory ID: MMSA-2026-00599

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