{"api_version":"1","generated_at":"2026-07-24T02:46:05+00:00","cve":"CVE-2021-32800","urls":{"html":"https://cve.report/CVE-2021-32800","api":"https://cve.report/api/cve/CVE-2021-32800.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-32800","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-32800"},"summary":{"title":"CVE-2021-32800","description":"Nextcloud server is an open source, self hosted personal cloud. In affected versions an attacker is able to bypass Two Factor Authentication in Nextcloud. Thus knowledge of a password, or access to a WebAuthN trusted device of a user was sufficient to gain access to an account. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. There are no workaround for this vulnerability.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2021-09-07 22:15:00","updated_at":"2022-09-27 14:18:00"},"problem_types":["CWE-306"],"metrics":[],"references":[{"url":"https://hackerone.com/reports/1271052","name":"https://hackerone.com/reports/1271052","refsource":"MISC","tags":[],"title":"HackerOne","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://security.gentoo.org/glsa/202208-17","name":"GLSA-202208-17","refsource":"GENTOO","tags":[],"title":"Nextcloud: Multiple Vulnerabilities (GLSA 202208-17) — Gentoo security","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/nextcloud/server/pull/28078","name":"https://github.com/nextcloud/server/pull/28078","refsource":"MISC","tags":[],"title":"Improve provider check by LukasReschke · Pull Request #28078 · nextcloud/server · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-gv5w-8q25-785v","name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-gv5w-8q25-785v","refsource":"CONFIRM","tags":[],"title":"Bypass of Two Factor Authentication · Advisory · nextcloud/security-advisories · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-32800","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32800","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"32800","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"nextcloud","cpe5":"nextcloud","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"32800","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"nextcloud","cpe5":"nextcloud_server","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2021-32800","qid":"710590","title":"Gentoo Linux Nextcloud Multiple Vulnerabilities (GLSA 202208-17)"},{"cve":"CVE-2021-32800","qid":"751131","title":"OpenSUSE Security Update for nextcloud (openSUSE-SU-2021:1253-1)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2021-32800","STATE":"PUBLIC","TITLE":"Bypass of Two Factor Authentication in Nextcloud server"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"security-advisories","version":{"version_data":[{"version_value":"< 20.0.12"},{"version_value":">= 21.0.0, < 21.0.4"},{"version_value":">= 22.0.0, < 22.1.0"}]}}]},"vendor_name":"nextcloud"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Nextcloud server is an open source, self hosted personal cloud. In affected versions an attacker is able to bypass Two Factor Authentication in Nextcloud. Thus knowledge of a password, or access to a WebAuthN trusted device of a user was sufficient to gain access to an account. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. There are no workaround for this vulnerability."}]},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-306: Missing Authentication for Critical Function"}]}]},"references":{"reference_data":[{"name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-gv5w-8q25-785v","refsource":"CONFIRM","url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-gv5w-8q25-785v"},{"name":"https://github.com/nextcloud/server/pull/28078","refsource":"MISC","url":"https://github.com/nextcloud/server/pull/28078"},{"name":"https://hackerone.com/reports/1271052","refsource":"MISC","url":"https://hackerone.com/reports/1271052"},{"refsource":"GENTOO","name":"GLSA-202208-17","url":"https://security.gentoo.org/glsa/202208-17"}]},"source":{"advisory":"GHSA-gv5w-8q25-785v","discovery":"UNKNOWN"}},"nvd":{"publishedDate":"2021-09-07 22:15:00","lastModifiedDate":"2022-09-27 14:18:00","problem_types":["CWE-306"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.2},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:N","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"NONE","baseScore":6.4},"severity":"MEDIUM","exploitabilityScore":10,"impactScore":4.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*","versionStartIncluding":"21.0.0","versionEndExcluding":"21.0.4","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*","versionStartIncluding":"22.0.0","versionEndExcluding":"22.1.0","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*","versionEndExcluding":"20.0.12","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"32800","Ordinal":"208188","Title":"CVE-2021-32800","CVE":"CVE-2021-32800","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"32800","Ordinal":"1","NoteData":"Nextcloud server is an open source, self hosted personal cloud. In affected versions an attacker is able to bypass Two Factor Authentication in Nextcloud. Thus knowledge of a password, or access to a WebAuthN trusted device of a user was sufficient to gain access to an account. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. There are no workaround for this vulnerability.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"32800","Ordinal":"2","NoteData":"2021-09-07","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"32800","Ordinal":"3","NoteData":"2021-09-07","Type":"Other","Title":"Modified"}]}}}