Medium severity4.3NVD Advisory· Published Sep 14, 2026· Updated Sep 14, 2026
CVE-2026-13417
CVE-2026-13417
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 the type of fields.properties on block creation which allows an authenticated user with editor access to a board to crash the Boards plugin worker and trigger a denial of service via a child block whose fields.properties is a non-object value. Mattermost Advisory ID: MMSA-2026-00710
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Range: <=11.9.0, <=11.8.4, <=11.7.7, <=10.11.22
- Range: <=11.9.0, <=11.8.4, <=11.7.7, <=10.11.22
Patches
Vulnerability mechanics
References
1News mentions
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