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CVE-2026-4286

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CVE-2026-4286

Published: May 18, 2026

Modified: May 18, 2026

PUBLISHED

CVSS v3.1

3.1

LOW

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

VendorProductVersions

Mattermost

Mattermost

affected
11.5.0 - <= 11.5.1
affected
10.11.0 - <= 10.11.13
unaffected
11.6.0
unaffected
11.5.2
unaffected
10.11.14

Weaknesses (CWE)

CWE-863

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

References

MMSA-2025-00552
vendor-advisory

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