CVE-2026-16046
Medium · 4.3CVSS
4.3
EPSS
0.3%
Published
Aug 17, 2026
CISA due date
—
The record
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
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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