Skip to content
CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2026-9812

Missing property field ownership validation in Playbooks run property update endpoint

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Mattermost

Description

Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.7, 10.11.x <= 10.11.22 fail to validate that a property field belongs to the specified run before updating its value which allows an authenticated user with run property-management access to crash the Playbooks plugin via a REST request referencing a property field that belongs to a different run. Mattermost Advisory ID: MMSA-2026-00684

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

  • 11.9.0 to ≤ 11.9.0affected
  • 11.8.0 to ≤ 11.8.4affected
  • 11.7.0 to ≤ 11.7.7affected
  • 10.11.0 to ≤ 10.11.22affected
  • 11.10.0unaffected
  • 11.9.1unaffected
  • 11.8.5unaffected
  • 11.7.8unaffected
  • 10.11.23unaffected

References