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
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
|
History
Mon, 18 May 2026 19:30:00 +0000
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| First Time appeared |
Mattermost mattermost Server
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| CPEs | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Mattermost mattermost Server
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Mon, 18 May 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Mon, 18 May 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost
Mattermost mattermost |
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| Vendors & Products |
Mattermost
Mattermost mattermost |
Mon, 18 May 2026 09:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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 | |
| Title | Playbooks Plugin fails to validate team transfers, allowing unauthorized removal of member access via playbook update | |
| Weaknesses | CWE-863 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: Mattermost
Published:
Updated: 2026-05-18T12:41:28.632Z
Reserved: 2026-03-16T16:29:41.559Z
Link: CVE-2026-4286
Updated: 2026-05-18T12:41:24.432Z
Status : Analyzed
Published: 2026-05-18T09:16:22.990
Modified: 2026-05-18T19:16:29.587
Link: CVE-2026-4286
No data.
OpenCVE Enrichment
Updated: 2026-05-18T11:30:23Z