Nextcloud Desktop up to 3.6.0 certificate validation

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Nextcloud Desktop up to 3.6.0. The impacted element is an unknown function. Executing a manipulation can lead to certificate validation. This vulnerability appears as CVE-2022-39334. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in Nextcloud Desktop up to 3.6.0 (Cloud Software). This vulnerability affects an unknown code block. The manipulation with an unknown input leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Nextcloud also ships a CLI utility called nextcloudcmd which is sometimes used for automated scripting and headless servers. Versions of nextcloudcmd prior to 3.6.1 would incorrectly trust invalid TLS certificates, which may enable a Man-in-the-middle attack that exposes sensitive data or credentials to a network attacker. This affects the CLI only. It does not affect the standard GUI desktop Nextcloud clients, and it does not affect the Nextcloud server.

The weakness was presented 11/26/2022 as 4927. The advisory is shared for download at github.com. This vulnerability was named CVE-2022-39334 since 09/02/2022. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1587.003.

The vulnerability scanner Nessus provides a plugin with the ID 265376 (Debian dla-4303 : caja-nextcloud - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.6.1 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (265376). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.7

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CNA Base Score: 3.9
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 265376
Nessus Name: Debian dla-4303 : caja-nextcloud - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Desktop 3.6.1
Patch: github.com

Timelineinfo

09/02/2022 🔍
11/26/2022 +85 days 🔍
11/26/2022 +0 days 🔍
11/05/2025 +1075 days 🔍

Sourcesinfo

Product: github.com

Advisory: 4927
Status: Confirmed

CVE: CVE-2022-39334 (🔍)
GCVE (CVE): GCVE-0-2022-39334
GCVE (VulDB): GCVE-100-214408

Entryinfo

Created: 11/26/2022 08:22
Updated: 11/05/2025 13:08
Changes: 11/26/2022 08:22 (52), 12/23/2022 14:17 (10), 09/20/2025 16:38 (17), 11/05/2025 13:08 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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