All intelligence
// vulnerability record
cached · NVD via COSMOS syncCVE-2026-15754
MEDIUMpublished 2026-08-17 15:16 UTC · 18 hours ago · modified 2026-08-17 16:16 UTC
4.2
CVSS / 10
// description
Mattermost versions 11.7.x <= 11.7.6, 11.8.x <= 11.8.3 The access control policy unassign endpoint fails to re-validate that each target channel still belongs to the requesting admin's team, which allows an authenticated team administrator to remove ABAC (attribute-based access control) policy assignments from channels outside their team via the policy unassign API after a channel has been moved to another team.. Mattermost Advisory ID: MMSA-2026-00718
// weaknesses (CWE)
- CWE-863