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CVE PROGRAM SOURCE RECORD7.6 High

CVE-2026-1046

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

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Status
Published
Published
Updated
Assigning organization
Mattermost

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

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mattermost Mattermost

Default version status: unaffected

  • 0 to ≤ 6.2.0affected
  • 0 to ≤ 5.2.13affected
  • 6.1.0unaffected
  • 6.0.3.0unaffected
  • 5.13.3.0unaffected

References