CVE-2026-3116 (GCVE-0-2026-3116)

Vulnerability from cvelistv5 – Published: 2026-03-26 16:19 – Updated: 2026-03-26 17:51
VLAI?
Title
Improper Input Validation in Zoom Plugin Webhook Handler
Summary
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
Severity ?
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
Vendor Product Version
Mattermost Mattermost Affected: 0 , ≤ 11.0.4 (semver)
Affected: 0 , ≤ 11.1.3 (semver)
Affected: 0 , ≤ 11.3.2 (semver)
Affected: 0 , ≤ 10.11.11 (semver)
Unaffected: 11.5.0
Unaffected: 11.4.1
Unaffected: 11.3.2
Unaffected: 11.2.4
Unaffected: 10.11.12
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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.