CVE-2026-27769

LowCVSS 2.7/10Last modified Jun 17, 2026

Description

Mattermost versions 10.11.x <= 10.11.12 fail to validate whether users were correctly owned by the correct Connected Workspace which allows a malicious remote server connected using the Conntexted Workspaces feature to change the displayed status of local users via the Connected Workspaces API.. Mattermost Advisory ID: MMSA-2026-00603

Metrics

CVSS 3.1 2.7/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-862

Affected software

No affected versions have been published.

Timeline

Published: Apr 15, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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