CVE-2026-5308CWE-400

Missing request body size limits on Zoom plugin HTTP endpoints

Medium · published May 22, 2026

CVSS v3.1
4.9
EPSS
0%
Percentile
37.6
In the wild
Unconfirmed
What it is

Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to enforce request body size limits on plugin HTTP endpoints which allows an attacker to cause a denial of service via crafted oversized HTTP requests.. Mattermost Advisory ID: MMSA-2026-00646

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
0.00445 · 37.6th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-05-22T10:20Z
EPSS history
Timeline
  • 22 MAY 10:20Z
    Missing request body size limits on Zoom plugin HTTP endpoints
    cvelistv5