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Unrated severityNVD Advisory· Published Feb 16, 2026· Updated Feb 17, 2026

Arbitrary application execution via unvalidated server-controlled URLs in Help menu

CVE-2026-1046

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

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

2

Patches

Vulnerability mechanics

References

1

News mentions

1