CVE-2026-4286

MediumCVSS 4.3/10Last modified Oct 14, 2026

Description

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

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-863

Affected software

No affected versions have been published.

Timeline

Published: May 18, 2026
Last modified: Oct 14, 2026
NVD status: Analyzed

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