Security Advisory

CVE-2026-16048

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-17 14:22:43

Last updated 2026-08-17 15:37:17

Assigner Mattermost

CVSS score 6.3

State PUBLISHED

Description

Mattermost versions 11.8.x <= 11.8.2, 11.7.x <= 11.7.6, 10.11.x <= 10.11.21 fail to restrict channel member role assignment to channel-scoped roles which allows a channel administrator to gain additional channel permissions via the channel member roles API.. Mattermost Advisory ID: MMSA-2026-00697

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