{"api_version":"1","generated_at":"2026-07-23T13:39:53+00:00","cve":"CVE-2020-8280","urls":{"html":"https://cve.report/CVE-2020-8280","api":"https://cve.report/api/cve/CVE-2020-8280.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-8280","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-8280"},"summary":{"title":"CVE-2020-8280","description":"A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files as PNG files to perform cross-site scripting (XSS) attacks.","state":"PUBLIC","assigner":"support@hackerone.com","published_at":"2021-01-06 21:15:00","updated_at":"2021-01-11 17:48:00"},"problem_types":["CWE-79"],"metrics":[],"references":[{"url":"https://nextcloud.com/security/advisory/?id=NC-SA-2020-044","name":"https://nextcloud.com/security/advisory/?id=NC-SA-2020-044","refsource":"MISC","tags":["Vendor Advisory"],"title":"advisory – Nextcloud","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://hackerone.com/reports/998422","name":"https://hackerone.com/reports/998422","refsource":"MISC","tags":["Exploit","Third Party Advisory"],"title":"HackerOne","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-8280","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-8280","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"8280","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"nextcloud","cpe5":"contacts","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"8280","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"nextcloud","cpe5":"contacts","cpe6":"*","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-2020-8280","ASSIGNER":"support@hackerone.com","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"n/a","product":{"product_data":[{"product_name":"Nextcloud Contacts","version":{"version_data":[{"version_value":"Fixed in 3.4.1"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Cross-site Scripting (XSS) - Stored (CWE-79)"}]}]},"references":{"reference_data":[{"refsource":"MISC","name":"https://hackerone.com/reports/998422","url":"https://hackerone.com/reports/998422"},{"refsource":"MISC","name":"https://nextcloud.com/security/advisory/?id=NC-SA-2020-044","url":"https://nextcloud.com/security/advisory/?id=NC-SA-2020-044"}]},"description":{"description_data":[{"lang":"eng","value":"A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files as PNG files to perform cross-site scripting (XSS) attacks."}]}},"nvd":{"publishedDate":"2021-01-06 21:15:00","lastModifiedDate":"2021-01-11 17:48:00","problem_types":["CWE-79"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.3,"impactScore":2.7},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:M/Au:S/C:N/I:P/A:N","accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"SINGLE","confidentialityImpact":"NONE","integrityImpact":"PARTIAL","availabilityImpact":"NONE","baseScore":3.5},"severity":"LOW","exploitabilityScore":6.8,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:nextcloud:contacts:*:*:*:*:*:*:*:*","versionEndExcluding":"3.4.1","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"8280","Ordinal":"168617","Title":"CVE-2020-8280","CVE":"CVE-2020-8280","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"8280","Ordinal":"1","NoteData":"A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files as PNG files to perform cross-site scripting (XSS) attacks.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"8280","Ordinal":"2","NoteData":"2021-01-06","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"8280","Ordinal":"3","NoteData":"2021-01-06","Type":"Other","Title":"Modified"}]}}}