CVE-2026-15754 Detail
Received
This CVE record has recently been published to the CVE List and has been included within the NVD dataset. DescriptionMattermost 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 Metrics
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CVSS 4.0 Severity and Vector Strings:
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Weakness Enumeration
Quick InfoCVE Dictionary Entry:CVE-2026-15754 NVD Published Date: 08/17/2026 NVD Last Modified: 08/17/2026 Source: Mattermost, Inc. |
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