Riskcovery

CVE-2026-3116

Improper Input Validation in Zoom Plugin Webhook Handler

State
Published
Severity
4.9 Medium
Published
Mar 26, 2026
Updated
Mar 26, 2026
Reserved
Feb 24, 2026

Read the record on cve.org

Description

Mattermost Plugins versions <=11.4 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to validate incoming request size which allows an authenticated attacker to cause service disruption via the webhook endpoint. Mattermost Advisory ID: MMSA-2026-00589

Scores

CVSSScoreVectorSource
3.14.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HMattermost

Weaknesses

  • CWE-400 Uncontrolled Resource Consumption

Affected Products

ProductVersions
MattermostMattermost
  • 11.0.4 and earlierAffected
  • 11.1.3 and earlierAffected
  • 11.3.2 and earlierAffected
  • 10.11.11 and earlierAffected
  • 11.5.0Not affected
  • 11.4.1Not affected
  • 11.3.2Not affected
  • 11.2.4Not affected
  • 10.11.12Not affected

References

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