CVE-2026-3116 Improper Input Validation in Zoom Plugin Webhook Handler

Mattermost Plugins versions =11.4 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to validate incoming request size which allows an authenticated attacker to cause service disruption via the webhook endpoint. Mattermost Advisory ID: MMSA-2026-00589...

CVE-2026-3116

CVE-2026-3116 affects Mattermost Plugins with versions