low2.6
CVE-2026-75588
Mattermost Desktop App versions <=6.2 6.2.2.0 fail to validate the URL scheme when checking whether a target URL is internal to the connected server, which all…
Impact
Mattermost Desktop App versions <=6.2 6.2.2.0 fail to validate the URL scheme when checking whether a target URL is internal to the connected server, which allows a network-positioned attacker to load a plugin popout window over an insecure connection via a link using a downgraded URL scheme. Mattermost Advisory ID: MMSA-2026-00717
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mattermost | Mattermost Desktop | from 6.2.0 before 6.2.3 |