CVE-2026-3116CWE-400

Improper Input Validation in Zoom Plugin Webhook Handler

Medium · published March 26, 2026

CVSS v3.1
4.9
EPSS
0%
Percentile
37.2
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
4.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00440 · 37.2th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-03-26T16:19Z
EPSS history
Timeline
  • 26 MAR 16:19Z
    Improper Input Validation in Zoom Plugin Webhook Handler
    cvelistv5