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CVE PROGRAM SOURCE RECORD3.8 Low

CVE-2026-8823

User Manager can demote bot accounts to guest without bot-management permission

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Status
Published
Published
Updated
Assigning organization
Mattermost

Description

Mattermost versions 11.7.x <= 11.7.0, 10.11.x <= 10.11.17 fail to validate bot targets when demoting users to guests which allows a lower-privileged administrator to degrade arbitrary bot accounts via the standard demote-user API.. Mattermost Advisory ID: MMSA-2026-00669

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

  • 11.7.0 to ≤ 11.7.0affected
  • 10.11.0 to ≤ 10.11.17affected
  • 11.8.0unaffected
  • 11.7.1unaffected
  • 10.11.18unaffected

References