A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files.Referenceshttps://hackerone.com/reports/742588https://nextcloud.com/security/advisory/?id=NC-SA-2020-039http://seclists.org/fulldisclosure/2020/Dec/55http://seclists.org/fulldisclosure/2020/Dec/57http://seclists.org/fulldisclosure/2020/Dec/58
