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CVE-2026-26304

MEDIUM CVSS: 4.3 Published: 2026-03-16 Modified: 2026-06-17

Description

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2 fail to verify run_create permission for empty playbookId, which allows team members to create unauthorized runs via the playbook run API. Mattermost Advisory ID: MMSA-2025-00542

Affected Platforms

Mattermost Mattermost Server

Weakness Type

CWE-863

References