CVE-2021-37631

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If you are unable to update it is advised to disable the Deck plugin."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-639", "description": "CWE-639: Authorization Bypass Through User-Controlled Key", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-09-07T19:50:11.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4mxp-j277-82hr"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/deck/pull/3217"}, {"tags": ["x_refsource_MISC"], "url": "https://hackerone.com/reports/1256021"}, {"tags": ["x_refsource_MISC"], "url": "https://hackerone.com/reports/1280931"}], "source": {"advisory": "GHSA-4mxp-j277-82hr", "discovery": "UNKNOWN"}, "title": "Circle can be accessed by non-Circle members in Nextcloud Deck", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-37631", "STATE": "PUBLIC", "TITLE": "Circle can be accessed by non-Circle members in Nextcloud Deck"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "security-advisories", "version": {"version_data": [{"version_value": "< 1.2.9"}, {"version_value": ">= 1.3.0, < 1.4.4"}, {"version_value": ">= 1.5.0, < 1.5.1"}]}}]}, "vendor_name": "nextcloud"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Deck is an open source kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. 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If you are unable to update it is advised to disable the Deck plugin."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-639: Authorization Bypass Through User-Controlled Key"}]}]}, "references": {"reference_data": [{"name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4mxp-j277-82hr", "refsource": "CONFIRM", "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4mxp-j277-82hr"}, {"name": "https://github.com/nextcloud/deck/pull/3217", "refsource": "MISC", "url": "https://github.com/nextcloud/deck/pull/3217"}, {"name": "https://hackerone.com/reports/1256021", "refsource": "MISC", "url": "https://hackerone.com/reports/1256021"}, {"name": "https://hackerone.com/reports/1280931", "refsource": "MISC", "url": "https://hackerone.com/reports/1280931"}]}, "source": {"advisory": "GHSA-4mxp-j277-82hr", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T01:23:01.348Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4mxp-j277-82hr"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/nextcloud/deck/pull/3217"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://hackerone.com/reports/1256021"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://hackerone.com/reports/1280931"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-37631", "datePublished": "2021-09-07T19:50:11.000Z", "dateReserved": "2021-07-29T00:00:00.000Z", "dateUpdated": "2024-08-04T01:23:01.348Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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In affected versions the Deck application didn't properly check membership of users in a Circle. This allowed other users in the instance to gain access to boards that have been shared with a Circle, even if the user was not a member of the circle. It is recommended that Nextcloud Deck is upgraded to 1.5.1, 1.4.4 or 1.2.9. If you are unable to update it is advised to disable the Deck plugin."}, {"lang": "es", "value": "Deck es una herramienta de organizaci\u00f3n estilo kanban de c\u00f3digo abierto destinada a la planificaci\u00f3n personal y la organizaci\u00f3n de proyectos para equipos integrada con Nextcloud. En las versiones afectadas, la aplicaci\u00f3n Deck no comprobaba apropiadamente la pertenencia de los usuarios a un Circle. Esto permit\u00eda a otros usuarios de la instancia conseguir acceso a los tableros que se hab\u00edan compartido con un Circle, incluso si el usuario no era miembro del mismo. Se recomienda actualizar Nextcloud Deck a versi\u00f3n 1.5.1, 1.4.4 o 1.2.9. Si no se puede actualizar es aconsejable deshabilitar el plugin Deck"}], "id": "CVE-2021-37631", "lastModified": "2026-06-17T04:00:52.040", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 4.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-09-07T20:15:07.923", "references": [{"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/nextcloud/deck/pull/3217"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4mxp-j277-82hr"}, {"source": "security-advisories@github.com", "tags": ["Permissions Required", "Third Party Advisory"], "url": "https://hackerone.com/reports/1256021"}, {"source": "security-advisories@github.com", "tags": ["Permissions Required", "Third Party Advisory"], "url": "https://hackerone.com/reports/1280931"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/nextcloud/deck/pull/3217"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4mxp-j277-82hr"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Permissions Required", "Third Party Advisory"], "url": "https://hackerone.com/reports/1256021"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Permissions Required", "Third Party Advisory"], "url": "https://hackerone.com/reports/1280931"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-639"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-639"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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