Vulnerability in Nextcloud Desktop
CVE-2021-22895
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.
Vulnerability class: Improper Certificate Validation
EPSS: 0.010 (59.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Nextcloud Desktop
- Debian Debian_linux — versions 10.0, 11.0
- N/a Nextcloud Desktop Client — versions Fixed in 3.3.1
Weakness classification (CWE)
References
- support@hackerone.com (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- support@hackerone.com (Patch, Third Party Advisory, x_refsource_MISC)
- support@hackerone.com (Third Party Advisory, x_refsource_MISC, Release Notes)
- support@hackerone.com (Third Party Advisory, x_refsource_MISC)
- support@hackerone.com (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
Frequently asked questions
- What is CVE-2021-22895?
- CVE-2021-22895 is a medium-severity vulnerability in Nextcloud Desktop, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2021-06-11.
- How severe is CVE-2021-22895?
- Medium severity. CVSS v3 base score is 5.9 out of 10.