{"id":"CVE-2026-1046","title":"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 Matte…","summary":"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 Matte…","severity":"high","cvss":7.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:L","cwe":["CWE-939"],"vendor":"mattermost","product":"mattermost_desktop","affected":["mattermost_desktop >= 5.13.0, < 5.13.3","mattermost_desktop >= 6.0.0, < 6.0.3"],"patched":["mattermost_desktop 6.0.3"],"published":"2026-02-16","updated":"2026-10-15","sourceUpdated":"2026-10-15T13:32:28.463","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-1046","references":[{"url":"https://mattermost.com/security-updates","label":"responsibledisclosure@mattermost.com"}],"tags":["nvd"],"epss":0.00259,"epssPercentile":0.16339,"ingestedAt":"2026-10-15T14:07:30.096Z","slug":"CVE-2026-1046","body":"## Overview\n\nMattermost 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\n\n## Affected\n\n- `mattermost_desktop >= 5.13.0, < 5.13.3`\n- `mattermost_desktop >= 6.0.0, < 6.0.3`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `mattermost_desktop 6.0.3`","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}