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CVE-2026-3109

LOW CVSS: 2.2 Published: 2026-03-26 Modified: 2026-06-17

Description

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

Affected Platforms

Mattermost Mattermost Server

Weakness Type

CWE-754

References