{"id":"CVE-2020-8133","aliases":["EUVD-2020-29034","GHSA-92hg-jjmr-6gv2"],"status":"published","title":"A wrong generation of the passphrase for the encrypted block in Nextcloud Server 19.0.1 allowed...","description":"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.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00725,"percentile":0.54423,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347","CWE-657"],"published":"2020-11-09T14:25:24Z","modified":"2026-10-24T10:30:52Z","products":[{"vendor":"hackerone","product":"nextcloud server"},{"vendor":"nextcloud","product":"nextcloud_server"}],"references":[{"url":"https://hackerone.com/reports/661051%2C","tags":["x_refsource_MISC","x_transferred","web"]},{"url":"https://nextcloud.com/security/advisory/?id=NC-SA-2020-038","tags":["x_refsource_MISC","x_transferred","Broken Link","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-8133"},{"url":"https://hackerone.com/reports/661051","tags":["Exploit","Third Party Advisory","evidence"]},{"url":"https://hackerone.com/reports/661051,"},{"url":"https://github.com/advisories/GHSA-92hg-jjmr-6gv2"}],"sources":{"cve":[{"id":"CVE-2020-8133","description":"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.","status":"published","published":"2020-11-09T14:25:24Z","modified":"2024-08-04T09:48:25.594Z","cwes":["CWE-657"],"updated_at":"2026-11-02T14:35:50.88562Z"}],"euvd":[{"id":"EUVD-2020-29034","description":"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.","status":"published","published":"2020-11-09T14:25:24Z","modified":"2024-08-04T09:48:25Z","updated_at":"2026-11-03T03:07:58.055641Z"}],"ghsa":[{"id":"GHSA-92hg-jjmr-6gv2","title":"A wrong generation of the passphrase for the encrypted block in Nextcloud Server 19.0.1 allowed...","description":"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.","status":"published","published":"2022-05-24T17:34:09Z","modified":"2023-01-29T05:04:29Z","cwes":["CWE-347"],"updated_at":"2026-11-02T14:45:34.167575Z"}],"nvd":[{"id":"CVE-2020-8133","description":"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.","status":"published","published":"2020-11-09T15:15:13.367Z","modified":"2026-06-17T03:25:55.093Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-657","CWE-347"],"updated_at":"2026-11-02T14:06:21.80969Z"}],"osv":[{"id":"CVE-2020-8133","description":"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.","status":"published","published":"2020-11-09T15:15:13.367Z","modified":"2026-10-24T10:30:52.292091208Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:17.663289Z"}]}}