Vulnerability details
CVE-2026-42283
devspace-sh devspace
DevSpace UI Server WebSocket CheckOrigin does not validate source
CVSS 3.1
7.7High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.7High | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| devspace-sh | devspace | < 6.3.21 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://github.com/devspace-sh/devspace/security/advisories/GHSA-hqwm-7x7x-8379 x_refsource_CONFIRM
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Details
- Published
- 2026-05-14
- Last updated
- 2026-05-16
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.15%
Probability of exploitation in 30 days
4.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-306Missing Authentication for Critical Function
- CWE-200Exposure of Sensitive Information to an Unauthorized Actor