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CVE PROGRAM SOURCE RECORD4.3 Medium

CVE-2026-26304

Permission Bypass in Playbook Run Creation

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Status
Published
Published
Updated
Assigning organization
Mattermost

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mattermost Mattermost

Default version status: unaffected

  • 11.3.0 to ≤ 11.3.0affected
  • 11.2.0 to ≤ 11.2.2affected
  • 11.4.0unaffected
  • 11.3.1unaffected
  • 11.2.3unaffected

References