CVE-2026-75025

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...

EUVD-2026-80939

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...

CVE-2026-75025

Mattermost Desktop App versions up to and including 6.2 are affected by a restriction flaw: server-rendered content was not sufficiently restricted from accessing local or private network resources from the desktop client. The issue was rated CVSS 3.1: 4.7 (MEDIUM) with a changed scope and low co...

CVE-2026-75025 Mattermost Desktop local network access from server-rendered content

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...

CVE-2026-75025: Origin Validation Error

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...

CVE-2026-4643: Improper Check for Unusual or Exceptional Conditions

Mattermost Desktop App versions =6.1 6.0.1 5.4.13.0 fail to prevent server-rendered content from closing an underlying application view in the Mattermost Desktop App which allows a malicious server or plugin to crash the desktop client via invoking window.close in the renderer context, leading to...