CVE-2026-9812

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

Score
CVSS 3.1 6.5 Medium
Status
Analyzed - responsibledisclosure@mattermost.com
Published
2026-09-14
Last modified
2026-10-06
Weaknesses
CWE-639

Affected products

References

 
 
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