{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-53971", "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "state": "PUBLISHED", "assignerShortName": "Mattermost", "dateReserved": "2025-07-22T07:46:53.204Z", "datePublished": "2025-08-21T07:31:01.870Z", "dateUpdated": "2025-08-21T14:51:19.669Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Mattermost", "vendor": "Mattermost", "versions": [{"lessThanOrEqual": "10.5.8", "status": "affected", "version": "10.5.0", "versionType": "semver"}, {"lessThanOrEqual": "9.11.17", "status": "affected", "version": "9.11.0", "versionType": "semver"}, {"version": "10.10.0", "status": "unaffected"}, {"version": "10.5.9", "status": "unaffected"}, {"version": "9.11.18", "status": "unaffected"}]}], "credits": [{"lang": "en", "type": "finder", "value": "hackit_bharat"}], "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."}], "metrics": [{"cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N", "baseSeverity": "LOW", "baseScore": 3.8}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "description": "CWE-863: Incorrect Authorization", "cweId": "CWE-863"}]}], "references": [{"url": "https://mattermost.com/security-updates"}], "solutions": [{"value": "Update Mattermost to versions 10.10.0, 10.5.9, 9.11.18 or higher.", "lang": "en"}], "source": {"advisory": "MMSA-2025-00485", "defect": ["https://mattermost.atlassian.net/browse/MM-64177"], "discovery": "EXTERNAL"}, "title": "Channel and Team Membership APIs inadvertently allow loss of Member privileges.", "providerMetadata": {"orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "shortName": "Mattermost", "dateUpdated": "2025-08-21T07:31:01.870Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-08-21T14:51:10.911929Z", "id": "CVE-2025-53971", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-08-21T14:51:19.669Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-53971", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-08-21T14:51:10.911929Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-08-21T14:51:16.544Z"}}], "cna": {"title": "Channel and Team Membership APIs inadvertently allow loss of Member privileges.", "source": {"defect": ["https://mattermost.atlassian.net/browse/MM-64177"], "advisory": "MMSA-2025-00485", "discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "value": "hackit_bharat"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"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"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Mattermost", "product": "Mattermost", "versions": [{"status": "affected", "version": "10.5.0", "versionType": "semver", "lessThanOrEqual": "10.5.8"}, {"status": "affected", "version": "9.11.0", "versionType": "semver", "lessThanOrEqual": "9.11.17"}, {"status": "unaffected", "version": "10.10.0"}, {"status": "unaffected", "version": "10.5.9"}, {"status": "unaffected", "version": "9.11.18"}], "defaultStatus": "unaffected"}], "solutions": [{"lang": "en", "value": "Update Mattermost to versions 10.10.0, 10.5.9, 9.11.18 or higher."}], "references": [{"url": "https://mattermost.com/security-updates"}], "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-863", "description": "CWE-863: Incorrect Authorization"}]}], "providerMetadata": {"orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "shortName": "Mattermost", "dateUpdated": "2025-08-21T07:31:01.870Z"}}}, "cveMetadata": {"cveId": "CVE-2025-53971", "state": "PUBLISHED", "dateUpdated": "2025-08-21T14:51:19.669Z", "dateReserved": "2025-07-22T07:46:53.204Z", "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "datePublished": "2025-08-21T07:31:01.870Z", "assignerShortName": "Mattermost"}, "dataVersion": "5.1"}

{"cveTags": [], "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."}], "id": "CVE-2025-53971", "lastModified": "2025-08-22T18:09:17.710", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.8, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 2.5, "source": "responsibledisclosure@mattermost.com", "type": "Secondary"}]}, "published": "2025-08-21T08:15:30.540", "references": [{"source": "responsibledisclosure@mattermost.com", "url": "https://mattermost.com/security-updates"}], "sourceIdentifier": "responsibledisclosure@mattermost.com", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "responsibledisclosure@mattermost.com", "type": "Secondary"}]}

{}

{"created": "2025-08-21T12:30:44.700455+00:00", "updated": "2025-08-21T12:30:44.700524+00:00", "vendors": ["mattermost", "mattermost$PRODUCT$mattermost"]}