Go Github.com/mattermost/mattermost-plugin-playbooks vulnerabilities
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Published CVEs affecting Go Github.com/mattermost/mattermost-plugin-playbooks: 2 record(s), with affected versions and fixes.
CVE-2026-6343
Medium · 4.3
CWE-863 May 18, 2026
Mattermost Playbooks Plugin fails to enforce view permissions in list endpoints, allowing unauthorized access to public playbooks
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to check public/private permissions which allows members without these permissions to access public playbooks via /get.. Mattermost Advisory ID: MMSA-2026-00591
CVE-2026-4286
Medium · 4.3
CWE-863 May 18, 2026
Playbooks Plugin fails to validate team transfers, allowing unauthorized removal of member access via playbook update
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to check if {{team_id}} was being changed when updating playbooks, allowing users with only {{Manage Playbook Configurations}} permission to change a playbook's team, bypassing manage members restriction via PUT api. Mattermost Advisory ID: MMSA-2025-00552