CVE-2019-20856
Mattermost Desktop App vulnerability analysis and mitigation

Overview

A vulnerability identified as CVE-2019-20856 was discovered in Mattermost Desktop App versions prior to 4.3.0 specifically affecting macOS systems. The vulnerability allows for dylib injection, which was disclosed in June 2020 (NVD, Debian Tracker).

Technical details

The vulnerability enables dylib injection in the Mattermost Desktop App on macOS systems. This security flaw affects versions of the application before 4.3.0 (NVD).

Impact

The vulnerability could potentially allow attackers to inject malicious dynamic libraries (dylib) into the Mattermost Desktop application on macOS systems, which could lead to arbitrary code execution (NVD).

Mitigation and workarounds

Users should upgrade to Mattermost Desktop App version 4.3.0 or later to address this vulnerability (NVD).

Additional resources


SourceThis report was generated using AI

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Published date

CVE-2026-9816HIGH8.3
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