Security Advisory

CVE-2026-7387

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-12 15:54:10

Last updated 2026-06-13 03:56:08

Assigner Mattermost

CVSS score 8.8

State PUBLISHED

Description

Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, 10.11.x <= 10.11.16 Mattermost fails to require role-management authorization when setting the scheme_admin flag on group syncable link and patch endpoints, which allows a user with group-link permissions to escalate themselves and group members to team or channel admin via crafted API requests.. Mattermost Advisory ID: MMSA-2026-00665

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