Mattermost Desktop 5.13.x < 5.13.6 / 6.x < 6.2.0 Multiple Vulnerabilities (MMSA-2026-00651 / MMSA-2026-00652)

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Version 1.5 Sep 18, 2026, 2:17 PM CVSS metrics ("CVSSv2 score" set to 6.8) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:N") CVSSv2 score source (changed from "CVE-2026-8683" to "CVE-2026-6517") CVSSv2 severity (based on CVE-2026-6517, severity decreased from "High" to "Medium") CVSSv3 score source (changed from "CVE-2026-6517" to none) Plugin Feed: 202609181417
Version 1.4 Jul 18, 2026, 3:00 PM Logic Changes (Unify Mattermost Desktop install name across OSes) Plugin Feed: 202607181500
Version 1.3 Jun 25, 2026, 4:10 AM IAVM reference STIG Severity (set to "I") Plugin Feed: 202606250410
Version 1.2 Jun 20, 2026, 5:45 PM CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:U/RL:OF/RC:C") CVSS temporal metrics ("CVSSv3 temporal vector" set to "CVSS:3.0/E:U/RL:O/RC:C") Exploit attributes ("Exploit available" set to "False") Exploit attributes ("Exploitability ease" set to "No known exploits are available") Plugin Feed: 202606201745
Version 1.1 Jun 19, 2026, 1:00 AM New Plugin Feed: 202606190100

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