No advisories yet.
Solution
Update Mattermost Desktop App to versions 6.3.0, 6.2.3.0 or higher.
Workaround
No workaround given by the vendor.
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
|
Thu, 17 Sep 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost
Mattermost mattermost |
|
| Vendors & Products |
Mattermost
Mattermost mattermost |
|
| Metrics |
ssvc
|
Thu, 17 Sep 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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 | |
| Title | Mattermost Desktop App plugin popout scheme validation bypass | |
| Weaknesses | CWE-1287 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: Mattermost
Published:
Updated: 2026-09-17T19:22:50.101Z
Reserved: 2026-08-17T22:19:32.227Z
Link: CVE-2026-75588
Updated: 2026-09-17T19:22:40.335Z
Status : Received
Published: 2026-09-17T16:17:41.940
Modified: 2026-09-17T20:18:14.713
Link: CVE-2026-75588
No data.
OpenCVE Enrichment
Updated: 2026-09-17T19:56:41Z