VULNERABILITY INTELLIGENCE

CVE-2026-1046

CVSS score7.6 HIGH
EPSS probability0.26%
CISA KEVNot currently listed
Published2026-02-16
Last modified2026-10-15
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:L

Description

Mattermost Desktop App versions <=6.0 6.2.0 5.2.13.0 fail to validate help links which allows a malicious Mattermost server to execute arbitrary executables on a user’s system via the user clicking on certain items in the Help menu Mattermost Advisory ID: MMSA-2026-00577

Weakness classification

  • responsibledisclosure@mattermost.com: CWE-939

Primary references