Vulnerabilities

CVSS

6.5 Medium

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Risk score

52.0

Published

2026-07-17

Status

Analyzed

Mattermost Desktop App versions <=6.2 5.5.13 6.0.2.0 fail to properly null check when checking for headers in the Mattermost Desktop App which allows any user to crash another channel members Desktop App via posting a malicious link with an embedded image that misses one of those headers. Mattermost Advisory ID: MMSA-2026-00668

Weaknesses

CWE-754

Coverage 1

vulnerability

Multiples vulnérabilités dans Mattermost Desktop App (18 juin 2026)

Multiple vulnerabilities have been discovered in the Mattermost Desktop App, potentially allowing for remote denial-of-service attacks and an unspecified security issue. These vulnerabilities affect older versions of the…

CERT-FR · Jun 18, 2026 Medium

CVE-2026-8075CVE-2026-9602vulnerabilitymattermostdesktop app

All articles mentioning it

Advisories and references

• mattermost.com/security-updates