CVE-2022-1548: Mattermost Playbooks

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Mattermost Playbooks plugin 1.25 and earlier fails to properly restrict user-level permissions, which allows playbook members to escalate their membership privileges and perform actions restricted to playbook admins.

Affected products

• Mattermost Playbooks: up to and including 1.25.0

Published 2022-05-03. Last modified 2026-06-17.