CVE-2026-42283
Published: 14 May 2026
Summary
CVE-2026-42283 is a high-severity Exposure of Sensitive Information to an Unauthorized Actor (CWE-200) vulnerability in Devspace Devspace. Its CVSS base score is 7.7 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Drive-by Compromise (T1189); ranked at the 0.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-30319
Vulnerability details
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…
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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.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Missing WebSocket origin validation enables drive-by exploitation from malicious sites via browser, directly matching T1189.
CVEs Like This One
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Session auditing enables detection of unauthorized exposure or access to sensitive information during user activities.
Privacy and security architectures require controls to protect sensitive information from unauthorized exposure across the system lifecycle.
Inventory identifies all systems holding or processing data, enabling detection of unauthorized exposure paths before exploitation.
Protection planning for critical infrastructure directly calls for authentication of access to essential functions before any operation is permitted.
Risk assessments evaluate exposure of critical functions lacking authentication and prioritize corrective controls.
Requires authentication gates on critical functions that must remain unavailable to anonymous public users.
Treats remote activation of surveillance-capable devices as a critical function that must be disabled or authenticated.
Decoys supply misleading data and log access attempts, directly detecting and deflecting unauthorized information exposure.