CVE-2026-42283: Devspace

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Devspace Devspace: version 6.3.20 only

Published 2026-05-14. Last modified 2026-06-17.