CVE-2026-8075
Medium
Description
Mattermost Desktop App versions <=6.2 5.5.13 6.0.2.0 fail to properly null check when checking for headers in the Mattermost Desktop App which allows any user to crash another channel members Desktop App via posting a malicious link with an embedded image that misses one of those headers. Mattermost Advisory ID: MMSA-2026-00668
SeverityMedium
CVSS6.5
Exploit probability—
Product
Mattermost Desktop
PublishedJul 17, 2026
First seenJul 17, 2026
Weakness typeCWE-754CWE-754
How to fix
Update
- mattermost mattermost_desktop5.13.6, 6.2.1 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mattermost mattermost_desktop | v < 5.13.6, 6.0.0 < v ≤ 6.0.2, 6.2.0 ≤ v < 6.2.1 | 5.13.6, 6.2.1 |
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