{"cve":"CVE-2021-22895","nvd":{"published":"2021-06-11T16:15:10.797","modified":"2026-06-17T03:37:58.290","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","score":5.9},"cwes":["CWE-295"],"references":["https://github.com/nextcloud/desktop/pull/2926","https://github.com/nextcloud/desktop/releases/tag/v3.1.3","https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qpgp-vf4p-wcw5","https://hackerone.com/reports/903424","https://www.debian.org/security/2021/dsa-4974"],"products":["debian:debian_linux","nextcloud:desktop"],"source":"nvd","synced_at":"2026-10-19T21:20:07.141963181+00:00"},"epss":{"cve":"CVE-2021-22895","score":0.01036,"percentile":0.63912,"date":"2026-11-01"},"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."]}