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CVE-2026-3109 (GCVE-0-2026-3109)

Vulnerability from cvelistv5 – Published: 2026-03-26 16:28 – Updated: 2026-03-26 19:52
VLAI
Title
Missing timestamp validation in Zoom webhook handler
Summary
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
Severity
2.2 (Low)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 17:44 UTC
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
URL Tags
https://mattermost.com/security-updates vendor-advisory
Impacted products
Vendor Product Version CPE status
Mattermost Mattermost Affected: 0 , ≤ 10.11.11 (semver)
Unaffected: 11.5.0
Unaffected: 10.11.12
guessed Create a notification for this product.
Credits
thecybertantrik
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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