TI-2026-30594 Aliases CVE-2026-42283 GHSA-hqwm-7x7x-8379

DevSpace UI Server WebSocket CheckOrigin does not validate source

LOW 35CWE-200Published 2026-05-14 · Updated 2026-05-16

Key facts

Attack vector: Local
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Information disclosure, Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-200 and CWE-306.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00152 4th percentileScored 2026-11-07

Fix Fixed devspace (devspace-sh): 6.3.21github.com/loft-sh/devspace (Go): 6.3.21

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
devspace-sh	devspace	before 6.3.21	6.3.21	Patch available	CNA
—	github.com/loft-sh/devspace (Go)	6.3.20 to before 6.3.21	6.3.21	Patch available	GHSA-hqwm-7x7x-8379

devspace Vendordevspace-sh Affected before 6.3.21 Fixed in 6.3.21 Patch available CNA
github.com/loft-sh/devspace (Go) Vendor— Affected 6.3.20 to before 6.3.21 Fixed in 6.3.21 Patch available GHSA-hqwm-7x7x-8379

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:devspace:devspace:6.3.20:::::::*	6.3.20	Vulnerable	devspace

cpe:2.3:a:devspace:devspace:6.3.20:*:*:*:*:*:*:* Versions 6.3.20 Vulnerable ·devspace

Remediation

Fix · CNA devspace (devspace-sh) Fixed in 6.3.21
Fix · GHSA-hqwm-7x7x-8379 github.com/loft-sh/devspace (Go) Fixed in 6.3.21 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-42283
2026-10-03 Alias added: GHSA-hqwm-7x7x-8379

References

Advisory 2

Other 1

https://github.com/devspace-sh/devspace

TI-2020-12138 The UI in DevSpace 4.13.0 allows web sites to execute actions on pods (on behalf of a… CVSS 3.1CRITICAL 9.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences