CVE-2025-55035
Medium
Description
Mattermost Desktop App versions <=5.13.0 fail to manage modals in the Mattermost Desktop App that stops a user with a server that uses basic authentication from accessing their server which allows an attacker that provides a malicious server to the user to deny use of the Desktop App via having the user configure the malicious server and forcing a modal popup that cannot be closed.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Mattermost Desktop
PublishedOct 16, 2025
First seenOct 16, 2025
Weakness typeCWE-754CWE-754
How to fix
Update
- mattermost mattermost_desktop5.13.1.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mattermost mattermost_desktop | v < 5.13.1.0 | 5.13.1.0 |
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