CVE-2026-1046 — Arbitrary application execution via unvalidated server-controlled URLs in Help menu
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 v…
Published: 2026-02-16 · CVSS: 7.6 · CVSS 3.1
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
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7