What’s Vulnerable › Vulnerabilities
CVE-2026-75025: Mattermost Desktop local network access from server-rendered content
- Severity: medium (CVSS 4.7 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-16 · updated 2026-10-13
- Weakness: CWE-346
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
Affected products
- Mattermost Desktop: from 6.2.0 before 6.2.3 — fixed in 6.2.3
How to fix
Upgrade to a fixed version: Mattermost Desktop 6.2.3. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-75025 or the next vulnerability affects your stack