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CVE PROGRAM SOURCE RECORD4.3 Medium

CVE-2026-4055

Insufficient permission validation on cross-team playbook run creation

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Status
Published
Published
Updated
Assigning organization
Mattermost

Description

Mattermost versions 11.5.x <= 11.5.1 fail to validate team-level run_create permission against the target team when creating a playbook run which allows an authenticated team member to create runs in teams where they lack permission via specifying a different team ID in the run creation API request. Mattermost Advisory ID: MMSA-2026-00629

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

  • 11.5.0 to ≤ 11.5.1affected
  • 11.6.0unaffected
  • 11.5.2unaffected
  • 10.11.14unaffected
  • 11.4.4unaffected

References