CVE-2021-22895
MEDIUM
5.9
CVSS Score
Published: June 11, 2021 at 03:49 PM UTC
Updated: June 17, 2026 at 03:37 AM UTC
2 products affected across 2 vendorsDebian LinuxDesktop
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Severity
MEDIUM5.9
Exploit prediction
EPSS 1%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%Desktop· Nextcloudnextcloud-app
95%v < 3.1.3
Affected range stops below 3.1.3, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 3.3.1 (unaffected)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (5)
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/nextcloud/desktop/pull/2926x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/nextcloud/desktop/releases/tag/v3.1.3x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qpgp-vf4p-wcw5x_refsource_MISCExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://hackerone.com/reports/903424Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2021/dsa-4974CVSS
- Attack Vector
- NETWORK
- Complexity
- HIGH
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-295
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