CVE-2021-32726

{"containers": {"cna": {"affected": [{"product": "security-advisories", "vendor": "nextcloud", "versions": [{"status": "affected", "version": "< 19.0.13"}, {"status": "affected", "version": ">= 20.0.0, < 20.0.11"}, {"status": "affected", "version": ">= 21.0.0, < 21.0.3"}]}], "descriptions": [{"lang": "en", "value": "Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, webauthn tokens were not deleted after a user has been deleted. If a victim reused an earlier used username, the previous user could gain access to their account. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-708", "description": "CWE-708: Incorrect Ownership Assignment", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-08-11T00:09:37.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/server/pull/27532"}, {"tags": ["x_refsource_MISC"], "url": "https://hackerone.com/reports/1202590"}, {"name": "GLSA-202208-17", "tags": ["vendor-advisory", "x_refsource_GENTOO"], "url": "https://security.gentoo.org/glsa/202208-17"}], "source": {"advisory": "GHSA-6qr9-c846-j8mg", "discovery": "UNKNOWN"}, "title": "Webauthn tokens not removed after user has been deleted", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-32726", "STATE": "PUBLIC", "TITLE": "Webauthn tokens not removed after user has been deleted"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "security-advisories", "version": {"version_data": [{"version_value": "< 19.0.13"}, {"version_value": ">= 20.0.0, < 20.0.11"}, {"version_value": ">= 21.0.0, < 21.0.3"}]}}]}, "vendor_name": "nextcloud"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Nextcloud Server is a Nextcloud package that handles data storage. 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There are no known workarounds."}]}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-708: Incorrect Ownership Assignment"}]}]}, "references": {"reference_data": [{"name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg", "refsource": "CONFIRM", "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg"}, {"name": "https://github.com/nextcloud/server/pull/27532", "refsource": "MISC", "url": "https://github.com/nextcloud/server/pull/27532"}, {"name": "https://hackerone.com/reports/1202590", "refsource": "MISC", "url": "https://hackerone.com/reports/1202590"}, {"name": "GLSA-202208-17", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/202208-17"}]}, "source": {"advisory": "GHSA-6qr9-c846-j8mg", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T23:33:54.834Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/nextcloud/server/pull/27532"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://hackerone.com/reports/1202590"}, {"name": "GLSA-202208-17", "tags": ["vendor-advisory", "x_refsource_GENTOO", "x_transferred"], "url": "https://security.gentoo.org/glsa/202208-17"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-32726", "datePublished": "2021-07-12T19:45:13.000Z", "dateReserved": "2021-05-12T00:00:00.000Z", "dateUpdated": "2024-08-03T23:33:54.834Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "security-advisories", "vendor": "nextcloud", "versions": [{"status": "affected", "version": "< 19.0.13"}, {"status": "affected", "version": ">= 20.0.0, < 20.0.11"}, {"status": "affected", "version": ">= 21.0.0, < 21.0.3"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "7D4E2A1A-C03E-4B91-87B6-6A8652B284F7", "versionEndExcluding": "19.0.13", "vulnerable": true}, {"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "9CF8A48F-A16D-4C5F-B098-F92F3D361FA9", "versionEndExcluding": "20.0.11", "versionStartIncluding": "20.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "D490C8D8-910E-44A1-9A8E-2F892D35D6CF", "versionEndExcluding": "21.0.3", "versionStartIncluding": "21.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, webauthn tokens were not deleted after a user has been deleted. If a victim reused an earlier used username, the previous user could gain access to their account. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds."}, {"lang": "es", "value": "Nextcloud Server es un paquete de Nextcloud que maneja el almacenamiento de datos. En versiones anteriores a 19.0.13, 20.011 y 21.0.3, los tokens de webauthn no fueron eliminados despu\u00e9s de borrar un usuario. Si una v\u00edctima reusaba un nombre de usuario usado anteriormente, el usuario anterior pod\u00eda conseguir acceso a su cuenta. El problema fue corregido en versiones 19.0.13, 20.0.11 y 21.0.3. No hay soluciones conocidas"}], "id": "CVE-2021-32726", "lastModified": "2026-06-17T03:53:30.503", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-07-12T20:15:10.037", "references": [{"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/nextcloud/server/pull/27532"}, {"source": "security-advisories@github.com", "tags": ["Permissions Required"], "url": "https://hackerone.com/reports/1202590"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202208-17"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/nextcloud/server/pull/27532"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Permissions Required"], "url": "https://hackerone.com/reports/1202590"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202208-17"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-708"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-287"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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