CVE-2026-9602CWE-400denial-of-service

CVE-2026-9602

Medium · published July 17, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
35.2
In the wild
Unconfirmed
What it is

Mattermost Desktop App versions <=6.2 6.0.2 5.6.13.0 fail to validate payloads sent from the Mattermost Web App to the Desktop App which allows a malicious server owner to crash the Mattermost Desktop App via changing the payload of a method to a malformed one. Mattermost Advisory ID: MMSA-2026-00678

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00420 · 35.2th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-07-17T15:17Z
Affected products (3)
ProductVersionsFixed in
mattermost/mattermost_desktop< 5.13.75.13.7
mattermost/mattermost_desktop≥ 6.0.0, ≤ 6.0.2—
mattermost/mattermost_desktop≥ 6.2.0, < 6.2.16.2.1
References (1)
https://mattermost.com/security-updates · [email protected]
EPSS history
Timeline
  • 17 JUL 10:03Z
    Mattermost Desktop App crashes when malformed arguments are provided to some exposed IPC methods
    cvelistv5