{"cve":"CVE-2020-8150","nvd":{"published":"2020-11-09T15:15:13.443","modified":"2026-06-17T03:25:56.803","status":"Modified","description":"A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N","score":4.1},"cwes":["CWE-311","CWE-310"],"references":["http://seclists.org/fulldisclosure/2020/Dec/55","http://seclists.org/fulldisclosure/2020/Dec/57","http://seclists.org/fulldisclosure/2020/Dec/58","https://hackerone.com/reports/742588","https://nextcloud.com/security/advisory/?id=NC-SA-2020-039"],"products":["nextcloud:nextcloud_server"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2020-8150","score":0.00289,"percentile":0.21555,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}