Vulnerabilities CVE-2026-16046

CVE-2026-16046

Low

Open

TLP:CLEAR

Missing run-state validation on finished playbook runs

NVD CVE.org

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Description

Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21 fail to enforce run-state validation on write operations for finished playbook runs which allows a run participant to modify status, checklists, retrospective content, ownership, and participants on completed runs via REST and GraphQL API requests. Mattermost Advisory ID: MMSA-2026-00675

Details

CVSS Score: 3.5
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Confidence: 90%
Published: Aug 17, 2026
Last Modified: Aug 17, 2026

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