CVE-2026-7387 Mattermost group syncable endpoints allow privilege escalation via scheme_admin

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 schemeadmin flag on group syncable link and patch endpoints, which allows a user with group-link permissions to escalate themselv...

PT-2026-48941

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...

Social Base - Moderately critical - Access bypass - SA-CONTRIB-2022-060

The Social Base theme is designed as a base theme for Open Social. This base theme holds has a lot of sensible defaults. It doesn't however contain much styling. We expect developers to want to change this for their own project. When content within the Open Social distribution is placed within a...