CVE-2026-16048

MediumCVSS 6.3/10Last modified Aug 18, 2026

Description

Mattermost versions 11.8.x <= 11.8.2, 11.7.x <= 11.7.6, 10.11.x <= 10.11.21 fail to restrict channel member role assignment to channel-scoped roles which allows a channel administrator to gain additional channel permissions via the channel member roles API.. Mattermost Advisory ID: MMSA-2026-00697

Metrics

CVSS 3.1 6.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Weakness enumeration

CWE-863

Affected software

No affected versions have been published.

Timeline

Published: Aug 17, 2026
Last modified: Aug 18, 2026
NVD status: Analyzed

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