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CVE-2026-10080

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CVSS 3.1
6.5 medium
EPSS
<1%p22
Published
()
Modified
Description

Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21, 11.8.x <= 11.8.3 fails to validate WebSocket command field types which allows an authenticated user to crash the plugin process and deny service to all Boards users via a custom_focalboard_SUBSCRIBE_TEAM message with a non-string teamId.. Mattermost Advisory ID: MMSA-2026-00687

Vendors
mattermost
Products
mattermost server
Weakness
CWE-704
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD CVE.org GitHub PoCs EPSS (0.3%)

In the news

No ingested article mentions this CVE yet.