CVE-2026-86348
MEDIUM
NVD
CVSS Score
4.3
Severity
MEDIUM
Published
Sep 14, 2026
Vendor
unknown
Description
Mattermost versions <=11.9 11.0.9 11.4.8 11.7.7 10.22.11.0 fail to recover from handler panics, which allows an authenticated user to crash the plugin via a post-action request with an unexpected field type.. Mattermost Advisory ID: MMSA-2026-00701