VULNERABILITY INTELLIGENCE

CVE-2026-3109

CVSS score2.2 LOW
EPSS probability0.30%
CISA KEVNot currently listed
Published2026-03-26
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L

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

Weakness classification

  • responsibledisclosure@mattermost.com: CWE-754

Primary references