GHSA-5RFV-H47G-XJ42 Mattermost MS Teams plugin doesn't limit the request body size on the /changes webhook endpoint

Mattermost Plugins versions =2.1.3.0 fail to limit the request body size on the /changes webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00611...

CVE-2026-24661

Mattermost Plugins