How severe is CVE-2026-42283?

CVE-2026-42283 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-42283 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-42283?

CVE-2026-42283 affects Devspace. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-42283?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-42283 have an EU (EUVD) identifier?

Yes. CVE-2026-42283 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30319.

When was CVE-2026-42283 published?

CVE-2026-42283 was published on 2026-05-14 and last updated on 2026-06-17.

CVE-2026-42283

CVE-2026-42283 is a high-severity vulnerability in Devspace with a CVSS 3.x base score of 7.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: High (CVSS 3.x base score 7.7)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30319
Weakness: CWE-200
Affected product: Devspace
Published: 2026-05-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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 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.
How severe is CVE-2026-42283?: CVE-2026-42283 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-42283 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42283?: CVE-2026-42283 affects Devspace. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-42283?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-42283 have an EU (EUVD) identifier?: Yes. CVE-2026-42283 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30319.
When was CVE-2026-42283 published?: CVE-2026-42283 was published on 2026-05-14 and last updated on 2026-06-17.

References

https://github.com/devspace-sh/devspace/security/advisories/GHSA-hqwm-7x7x-8379

Affected products (1)

cpe:2.3:a:devspace:devspace:6.3.20:*:*:*:*:*:*:*

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