Mattermost Desktop App versions <=5.13.3 fail to attach listeners restricting navigation to external sites within the Mattermost app which allows a malicious server to expose preload script functionality to untrusted servers via having a user open an external link in their Mattermost server. Mattermost Advisory ID: MMSA-2026-00596
References
| Link | Resource |
|---|---|
| https://mattermost.com/security-updates | Vendor Advisory |
Configurations
History
05 Mar 2026, 16:07
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Mattermost
Mattermost mattermost Desktop |
|
| References | () https://mattermost.com/security-updates - Vendor Advisory | |
| CPE | cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:* |
02 Mar 2026, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-03-02 14:16
Updated : 2026-03-05 16:07
NVD link : CVE-2026-1628
Mitre link : CVE-2026-1628
CVE.ORG link : CVE-2026-1628
JSON object : View
Products Affected
mattermost
- mattermost_desktop
CWE
CWE-829
Inclusion of Functionality from Untrusted Control Sphere
