{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-49222", "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "state": "PUBLISHED", "assignerShortName": "Mattermost", "dateReserved": "2025-07-22T07:46:53.179Z", "datePublished": "2025-08-21T07:59:45.057Z", "dateUpdated": "2025-08-21T13:57:13.759Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Mattermost", "vendor": "Mattermost", "versions": [{"lessThanOrEqual": "10.8.3", "status": "affected", "version": "10.8.0", "versionType": "semver"}, {"lessThanOrEqual": "10.5.8", "status": "affected", "version": "10.5.0", "versionType": "semver"}, {"lessThanOrEqual": "9.11.17", "status": "affected", "version": "9.11.0", "versionType": "semver"}, {"lessThanOrEqual": "10.9.2", "status": "affected", "version": "10.9.0", "versionType": "semver"}, {"lessThanOrEqual": "10.10.0", "status": "affected", "version": "10.10.0", "versionType": "semver"}, {"version": "10.11.0", "status": "unaffected"}, {"version": "10.8.4", "status": "unaffected"}, {"version": "10.5.9", "status": "unaffected"}, {"version": "9.11.18", "status": "unaffected"}, {"version": "10.9.3", "status": "unaffected"}, {"version": "10.10.1", "status": "unaffected"}]}], "credits": [{"lang": "en", "type": "finder", "value": "daw10"}], "descriptions": [{"lang": "en", "value": "Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2, 10.10.x <= 10.10.0 fail to validate upload types in remote cluster upload sessions which allows a system admin to upload non-attachment file types via shared channels that could potentially be placed in arbitrary filesystem directories."}], "metrics": [{"cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N", "baseSeverity": "MEDIUM", "baseScore": 6.8}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "description": "CWE-434: Unrestricted Upload of File with Dangerous Type", "cweId": "CWE-434"}]}], "references": [{"url": "https://mattermost.com/security-updates"}], "solutions": [{"value": "Update Mattermost to versions 10.11.0, 10.8.4, 10.5.9, 9.11.18, 10.9.3, 10.10.1 or higher.", "lang": "en"}], "source": {"advisory": "MMSA-2025-00505", "defect": ["https://mattermost.atlassian.net/browse/MM-64779"], "discovery": "EXTERNAL"}, "title": "Mattermost Shared Channel Upload Type Validation Bypass", "providerMetadata": {"orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "shortName": "Mattermost", "dateUpdated": "2025-08-21T07:59:45.057Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-08-21T13:57:06.140700Z", "id": "CVE-2025-49222", "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": "2025-08-21T13:57:13.759Z"}}]}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2, 10.10.x <= 10.10.0 fail to validate upload types in remote cluster upload sessions which allows a system admin to upload non-attachment file types via shared channels that could potentially be placed in arbitrary filesystem directories."}, {"lang": "es", "value": "Las versiones de Mattermost 10.8.x &lt;= 10.8.3, 10.5.x &lt;= 10.5.8, 9.11.x &lt;= 9.11.17, 10.9.x &lt;= 10.9.2, 10.10.x &lt;= 10.10.0 no pueden validar los tipos de carga en sesiones de carga de cl\u00faster remoto, lo que permite que un administrador del sistema cargue tipos de archivos no adjuntos a trav\u00e9s de canales compartidos que potencialmente podr\u00edan ubicarse en directorios arbitrarios del sistema de archivos."}], "id": "CVE-2025-49222", "lastModified": "2025-08-21T08:15:30.177", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 4.0, "source": "responsibledisclosure@mattermost.com", "type": "Secondary"}]}, "published": "2025-08-21T08:15:30.177", "references": [{"source": "responsibledisclosure@mattermost.com", "url": "https://mattermost.com/security-updates"}], "sourceIdentifier": "responsibledisclosure@mattermost.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-434"}], "source": "responsibledisclosure@mattermost.com", "type": "Secondary"}]}

{}