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.
References (5)
Core 5
Core References
Exploit, Issue Tracking, Third Party Advisory x_refsource_misc
https://hackerone.com/reports/903424
Patch, Third Party Advisory x_refsource_misc
https://github.com/nextcloud/desktop/pull/2926
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/nextcloud/desktop/releases/tag/v3.1.3
Third Party Advisory x_refsource_misc
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qpgp-vf4p-wcw5
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2021/dsa-4974
Scores
CVSS v3
5.9
EPSS
0.0036
EPSS Percentile
58.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Details
CWE
CWE-295
Status
published
Products (3)
debian/debian_linux
10.0
debian/debian_linux
11.0
nextcloud/desktop
< 3.1.3
Published
Jun 11, 2021
Tracked Since
Feb 18, 2026