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CVE PROGRAM SOURCE RECORD2.2 Low

CVE-2026-3109

Missing timestamp validation in Zoom webhook handler

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Status
Published
Published
Updated
Assigning organization
Mattermost

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mattermost Mattermost

Default version status: unaffected

  • 0 to ≤ 10.11.11affected
  • 11.5.0unaffected
  • 10.11.12unaffected

References