CVE-2026-93846lowCWE-863

CVE-2026-93846: low-severity vulnerability in Mattermost

Team admin can escalate a team member's permissions via the team member roles endpoint

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8Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 3.8epss 0.2%
Mattermost versions 11.7.x <= 11.7.10 fail to restrict which built-in roles can be assigned to a team member via the API, which allows a team admin to grant a team member permissions beyond those permitted by the configured permission scheme via the {{update-team-member-roles}} REST API.. Mattermost Advisory ID: MMSA-2026-00734
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Affected products
Mattermost · Mattermost
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