CVE-2026-27769

low

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

References

https://mattermost.com/security-updates

Details

Source: Mitre, NVD

Published: 2026-04-15

Risk Information

CVSS v2

Base Score: 3.3

Vector: CVSS2#AV:N/AC:L/Au:M/C:N/I:P/A:N

Severity: Low

CVSS v3

Base Score: 2.7

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