CVE-2026-75025

Medium

Description

Mattermost Desktop App versions <=6.2 6.2.2.0 Fixed an issue where Mattermost Desktop did not sufficiently restrict server-rendered content from accessing local or private network resources. Thanks to game0v3r for contributing to this improvement under the Mattermost responsible disclosure policy. Mattermost Advisory ID: MMSA-2026-00698

SeverityMedium
CVSS4.7
Exploit probability—
ProductMattermost Desktop
PublishedSep 16, 2026
First seenSep 16, 2026
Weakness typeCWE-346CWE-346

How to fix

Update
  • mattermost mattermost_desktop6.2.3 or later

Affected products

ProductAffected versionsFixed in
mattermost mattermost_desktop6.2.0 ≤ v < 6.2.36.2.3

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