CVE-2026-13417
EUVD-2026-7737614.09.2026, 11:17
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-2026-00710Enginsight
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| mattermost | mattermost | 𝑥 ≤ 11.9.0 | CNA |
| mattermost | mattermost | 11.8.0 ≤ 𝑥 ≤ 11.8.4 | CNA |
| mattermost | mattermost | 11.7.0 ≤ 𝑥 ≤ 11.7.7 | CNA |
| mattermost | mattermost | 10.11.0 ≤ 𝑥 ≤ 10.11.22 | CNA |
Common Weakness Enumeration
References