{"api_version":"1","generated_at":"2026-07-23T13:09:19+00:00","cve":"CVE-2021-20671","urls":{"html":"https://cve.report/CVE-2021-20671","api":"https://cve.report/api/cve/CVE-2021-20671.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-20671","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-20671"},"summary":{"title":"CVE-2021-20671","description":"Invalid file validation on the upload feature in GROWI versions v4.2.2 allows a remote attacker with administrative privilege to overwrite the files on the server, which may lead to arbitrary code execution.","state":"PUBLIC","assigner":"vultures@jpcert.or.jp","published_at":"2021-03-10 10:15:00","updated_at":"2021-03-17 17:38:00"},"problem_types":["CWE-20"],"metrics":[],"references":[{"url":"https://jvn.jp/en/vu/JVNVU94889258/index.html","name":"https://jvn.jp/en/vu/JVNVU94889258/index.html","refsource":"MISC","tags":["Third Party Advisory"],"title":"JVNVU#94889258: Multiple vulnerabilities in GROWI","mime":"text/xml","httpstatus":"200","archivestatus":"200"},{"url":"https://weseek.co.jp/security/2021/03/08/vulnerability/growi-prevent-multiple-xss/","name":"https://weseek.co.jp/security/2021/03/08/vulnerability/growi-prevent-multiple-xss/","refsource":"MISC","tags":["Vendor Advisory"],"title":"GROWI 脆弱性対応のお知らせ (JVN#94889258) | WESEEK, Inc.","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-20671","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20671","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"20671","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"weseek","cpe5":"growi","cpe6":"4.2.2","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2021-20671","ASSIGNER":"vultures@jpcert.or.jp","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"WESEEK, Inc.","product":{"product_data":[{"product_name":"GROWI","version":{"version_data":[{"version_value":"versions v4.2.2 and earlier"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Improper Input Validation"}]}]},"references":{"reference_data":[{"url":"https://weseek.co.jp/security/2021/03/08/vulnerability/growi-prevent-multiple-xss/","refsource":"MISC","name":"https://weseek.co.jp/security/2021/03/08/vulnerability/growi-prevent-multiple-xss/"},{"url":"https://jvn.jp/en/vu/JVNVU94889258/index.html","refsource":"MISC","name":"https://jvn.jp/en/vu/JVNVU94889258/index.html"}]},"description":{"description_data":[{"lang":"eng","value":"Invalid file validation on the upload feature in GROWI versions v4.2.2 allows a remote attacker with administrative privilege to overwrite the files on the server, which may lead to arbitrary code execution."}]}},"nvd":{"publishedDate":"2021-03-10 10:15:00","lastModifiedDate":"2021-03-17 17:38:00","problem_types":["CWE-20"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.2,"baseSeverity":"HIGH"},"exploitabilityScore":1.2,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":6.5},"severity":"MEDIUM","exploitabilityScore":8,"impactScore":6.4,"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:weseek:growi:4.2.2:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"20671","Ordinal":"194716","Title":"CVE-2021-20671","CVE":"CVE-2021-20671","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"20671","Ordinal":"1","NoteData":"Invalid file validation on the upload feature in GROWI versions v4.2.2 allows a remote attacker with administrative privilege to overwrite the files on the server, which may lead to arbitrary code execution.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"20671","Ordinal":"2","NoteData":"2021-03-10","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"20671","Ordinal":"3","NoteData":"2021-03-10","Type":"Other","Title":"Modified"}]}}}