CVE-2025-53971

{"id": "CVE-2025-53971", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "responsibledisclosure@mattermost.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 3.8, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 1.2}]}, "published": "2025-08-21T08:15:30.540", "references": [{"url": "https://mattermost.com/security-updates", "source": "responsibledisclosure@mattermost.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "responsibledisclosure@mattermost.com", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate authorization for team scheme role modifications which allows Team Admins to demote Team Members to Guests via the PUT /api/v4/teams/team-id/members/user-id/schemeRoles API endpoint."}, {"lang": "es", "value": "Las versiones de Mattermost 10.5.x &lt;= 10.5.8, 9.11.x &lt;= 9.11.17 no pueden validar correctamente la autorizaci\u00f3n para las modificaciones de roles del esquema de equipo, lo que permite a los administradores de equipo degradar a los miembros del equipo a invitados a trav\u00e9s del endpoint de API PUT /api/v4/teams/team-id/members/user-id/schemeRoles."}], "lastModified": "2025-08-22T18:09:17.710", "sourceIdentifier": "responsibledisclosure@mattermost.com"}