Unrated severityNVD Advisory· Published Mar 16, 2026· Updated Mar 17, 2026
Team Admin Privilege Escalation to Demote Members to Guest
CVE-2026-26230
Description
Mattermost versions 10.11.x <= 10.11.10 fail to properly validate permission requirements in the team member roles API endpoint which allows team administrators to demote members to guest role. Mattermost Advisory ID: MMSA-2025-00531
Affected products
1- Range: 10.11.0
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1- mattermost.com/security-updatesmitrevendor-advisory
News mentions
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