GHSA-WVCV-9XPM-7MQC Mattermost doesn't enforce slash command trigger-word uniqueness during command updates

Mattermost versions 11.5.x = 11.5.1, 10.11.x = 10.11.13, 11.4.x = 11.4.3 Fail to enforce slash command trigger-word uniqueness during command updates which allows an authenticated team member with Manage Own Slash Commands permission to hijack and impersonate existing system or custom slash...

Mattermost doesn't enforce slash command trigger-word uniqueness during command updates

Mattermost versions 11.5.x = 11.5.1, 10.11.x = 10.11.13, 11.4.x = 11.4.3 Fail to enforce slash command trigger-word uniqueness during command updates which allows an authenticated team member with Manage Own Slash Commands permission to hijack and impersonate existing system or custom slash...

CVE-2026-28732 Slash command trigger-word update allowed command hijacking

Mattermost versions 11.5.x = 11.5.1, 10.11.x = 10.11.13, 11.4.x = 11.4.3 Fail to enforce slash command trigger-word uniqueness during command updates which allows an authenticated team member with Manage Own Slash Commands permission to hijack and impersonate existing system or custom slash...

Russian APT28 Deploys "NotDoor" Outlook Backdoor Against Companies in NATO Countries

The Russian state-sponsored hacking group tracked as APT28 has been attributed to a new Microsoft Outlook backdoor called NotDoor in attacks targeting multiple companies from different sectors in NATO member countries. NotDoor "is a VBA macro for Outlook designed to monitor incoming emails for a...