📦 Mattermost Desktop

by Mattermost

🔍 What is Mattermost Desktop?

Description coming soon...

🛡️ Security Overview

Click on a severity to filter vulnerabilities

⚠️ Known Vulnerabilities

CVE-2026-1628

MEDIUM CVSS 4.6 Mar 2, 2026

The Mattermost Desktop App vulnerability allows malicious Mattermost servers to expose preload script functionality to untrusted external sites when users click external links. This affects all users ...

CVE-2025-55035

MEDIUM CVSS 6.1 Oct 16, 2025

This vulnerability in Mattermost Desktop App allows attackers to create a denial-of-service condition by tricking users into configuring a malicious server. When users connect to a malicious server us...

CVE-2024-37182

MEDIUM CVSS 4.7 Jun 14, 2024

Mattermost Desktop App versions up to 5.7.0 fail to properly prompt users for permission when opening external URLs, allowing attackers to force victims to execute arbitrary programs via custom URI sc...

CVE-2025-13326

LOW CVSS 3.9 Dec 17, 2025

Mattermost Desktop App versions before 6.0.0 for macOS fail to enable Hardened Runtime when packaged for the Mac App Store, allowing attackers to bypass macOS security controls. This vulnerability aff...

CVE-2025-13321

LOW CVSS 3.3 Dec 17, 2025

Mattermost Desktop App versions before 6.0.0 fail to properly clear sensitive information from logs and data when servers are deleted. This allows attackers with local system access to read potentiall...