CVEvulnerability

CVE-2026-10080

6.5 MEDIUM Published 2026-08-17 Modified 2026-08-18 Official page ↗
Status
Analyzed
Published
2026-08-17
Last modified
2026-08-18
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-704

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

Affected configurations

• mattermost mattermost server (>= 10.11.0 < 10.11.22) • mattermost mattermost server (>= 11.7.0 < 11.7.7) • mattermost mattermost server (>= 11.8.0 < 11.8.4)

Related

Weakness · CWE (1)

  • CWE-704 Incorrect Type Conversion or Cast weakness

References