DevSpace is a client-only developer tool for cloud-native development with Kubernetes. Prior to 6.3.21, DevSpace's UI server WebSocket accepts connections from all origins by default, and therefore several endpoints are exposed via this WebSocket. When a developer runs the DevSpace UI and at the same time uses a browser to access the internet, a malicious website they visit can use their browser to establish a cross-origin WebSocket connection to ws://127.0.0.1:8090. This vulnerability is fixed in 6.3.21.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-hqwm-7x7x-8379 DevSpace UI Server WebSocket CheckOrigin does not validate source
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sun, 17 May 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Devspace
Devspace devspace
Vendors & Products Devspace
Devspace devspace

Sat, 16 May 2026 01:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 14 May 2026 16:15:00 +0000

Type Values Removed Values Added
Description DevSpace is a client-only developer tool for cloud-native development with Kubernetes. Prior to 6.3.21, DevSpace's UI server WebSocket accepts connections from all origins by default, and therefore several endpoints are exposed via this WebSocket. When a developer runs the DevSpace UI and at the same time uses a browser to access the internet, a malicious website they visit can use their browser to establish a cross-origin WebSocket connection to ws://127.0.0.1:8090. This vulnerability is fixed in 6.3.21.
Title DevSpace UI Server WebSocket CheckOrigin does not validate source
Weaknesses CWE-200
CWE-306
References
Metrics cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-16T00:36:17.542Z

Reserved: 2026-04-26T12:13:55.551Z

Link: CVE-2026-42283

cve-icon Vulnrichment

Updated: 2026-05-16T00:36:13.103Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-14T16:16:21.347

Modified: 2026-05-14T18:12:13.527

Link: CVE-2026-42283

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-17T19:30:08Z

Weaknesses