CVE-2026-42283: 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…

PriorityP340high7.8CVSS 3.1

AVLACLPRNUIRSUCHIHAH

EPSS

0.15%

4.8th percentile

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

3 ranges

Vendor	Product	Version range	Fixed in
devspace-sh	devspace	< 6.3.21	6.3.21
devspace	devspace	—	—
github.com	loft-sh_devspace	>= 6.3.20 < 6.3.21	6.3.21

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