CVE-2026-9812 - Missing property field ownership validation in Playbooks run property update endpoint

CVE-2026-9812 - Missing property field ownership validation in Playbooks run property update endpoint

https://cvefeed.io/rssfeed/latest.atom / Mon, 09/14/2026 - 13:32
CVE ID :CVE-2026-9812
Published : Sept. 14, 2026, 10:43 a.m. | 23 minutes ago
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
Severity: 6.5 | MEDIUM
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