Feed/CVE-2026-7387
CVE-2026-7387HIGHCVSS 8.8

CVE-2026-7387

Published Jun 12, 2026·Updated Aug 24, 2026

NVD 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

Affected Packages (2)

github.com/mattermost/mattermost/server/v8GO
From 8.0.0-20250731163400-5b955468ea1e
Fixed in 8.0.0-20260506065351-202d125afa87
github.com/mattermost/mattermost-serverGO
Fixed in 11.6.1

CVSS Vector

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

References

View on NVD Search GitHub Search Google

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