Riskcovery

CVE-2026-3109

Missing timestamp validation in Zoom webhook handler

State
Published
Severity
2.2 Low
Published
Mar 26, 2026
Updated
Mar 26, 2026
Reserved
Feb 24, 2026

Read the record on cve.org

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

Scores

CVSSScoreVectorSource
3.12.2 LowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:LMattermost

Weaknesses

  • CWE-754 Improper Check for Unusual or Exceptional Conditions

Affected Products

ProductVersions
MattermostMattermost
  • 10.11.11 and earlierAffected
  • 11.5.0Not affected
  • 10.11.12Not affected

References

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