CVE-2020-8133

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{"affected": [{"affectedData": [{"product": "Nextcloud Server", "vendor": "n/a", "versions": [{"status": "affected", "version": "19.0.2"}]}], "source": "support@hackerone.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:19.0.1:*:*:*:*:*:*:*", "matchCriteriaId": "4DAAC0B9-52B0-43A0-A7D1-C37C688B0B4E", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A wrong generation of the passphrase for the encrypted block in Nextcloud Server 19.0.1 allowed an attacker to overwrite blocks in a file."}, {"lang": "es", "value": "Una generaci\u00f3n inapropiada de la frase de contrase\u00f1a para el bloque cifrado en Nextcloud Server versi\u00f3n 19.0.1 permiti\u00f3 a un atacante sobrescribir bloques en un archivo"}], "id": "CVE-2020-8133", "lastModified": "2026-06-17T03:25:55.093", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "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": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-11-09T15:15:13.367", "references": [{"source": "support@hackerone.com", "url": "https://hackerone.com/reports/661051%2C"}, {"source": "support@hackerone.com", "tags": ["Broken Link"], "url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-038"}, {"source": "nvd@nist.gov", "tags": ["Exploit", "Third Party Advisory"], "url": "https://hackerone.com/reports/661051"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://hackerone.com/reports/661051%2C"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link"], "url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-038"}], "sourceIdentifier": "support@hackerone.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-657"}], "source": "support@hackerone.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-347"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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