Nextcloud Desktop Client before 3.3.1 is vulnerable to improper certificate validation due to lack of SSL certificate verification when using the "Register with a Provider" flow.Referenceshttps://hackerone.com/reports/903424https://github.com/nextcloud/desktop/pull/2926https://github.com/nextcloud/desktop/releases/tag/v3.1.3https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qpgp-vf4p-wcw5https://www.debian.org/security/2021/dsa-4974
