CVE-2021-22895

Published: Jun 11, 2021Modified: Jun 17, 2026

5.9

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitability: 2.2 / Impact: 3.6

Source: NVD

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.

Affected (3)

Products: Nextcloud: Desktop · Debian: Debian Linux

1 product

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Nextcloud Desktop	Before 3.1.3

Configuration B

2 vulnerable

Vulnerable Software	Affected Versions
Debian Debian Linux	Version 10.0
Debian Debian Linux	Version 11.0

Related CWEs

CWE-295

Improper Certificate Validation

The product does not validate, or incorrectly validates, a certificate.

References (10)

https://github.com/nextcloud/desktop/pull/2926

Source: support@hackerone.com

PatchThird Party Advisory

https://github.com/nextcloud/desktop/releases/tag/v3.1.3

Source: support@hackerone.com

Release NotesThird Party Advisory

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qpgp-vf4p-wcw5

Source: support@hackerone.com

Third Party Advisory

https://hackerone.com/reports/903424

Source: support@hackerone.com

ExploitIssue TrackingThird Party Advisory

https://www.debian.org/security/2021/dsa-4974

Source: support@hackerone.com

Third Party Advisory

https://github.com/nextcloud/desktop/pull/2926