Mattermost Plugins versions <=11.4 10.11.11.0 fail to validate webhook request timestamps which allows an attacker to corrupt Zoom meeting state in Mattermost via replayed webhook requests. Mattermost Advisory ID: MMSA-2026-00584
Exploitability
AV:NAC:HPR:HUI:NScope
S:UImpact
C:NI:NA:L2.2/CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:LOther