Vulnerability Description
Blueprint Studio is a VS Code-like file editor for Home Assistant configuration files. Prior to 2.5.2, Blueprint Studio exposed administrator-intended backend API actions to any authenticated Home Assistant user because the backend did not consistently enforce the panel's admin-only authorization boundary. Affected surfaces included the backend API, upload API, stream routes, terminal WebSocket, Blueprint Studio WebSocket subscriptions, call_service, render_template, global_replace, file and stream access paths, upload handling, and terminal helpers. A non-admin user could invoke arbitrary Home Assistant services, expose Home Assistant state through templates, modify configuration files, access streamed or downloaded configuration content, upload files, or reach terminal-related helpers. These actions could compromise the confidentiality, integrity, and availability of the Home Assistant installation. This issue is fixed in version 2.5.2.
Related Weaknesses (CWE)
References
- https://github.com/ha-china/blueprint-studio/commit/943aed0be67f3a910b0f70a38642
- https://github.com/ha-china/blueprint-studio/releases/tag/v2.5.2
- https://github.com/ha-china/blueprint-studio/security/advisories/GHSA-ppwq-ch6x-
FAQ
What is CVE-2026-53453?
CVE-2026-53453 is a documented vulnerability. Blueprint Studio is a VS Code-like file editor for Home Assistant configuration files. Prior to 2.5.2, Blueprint Studio exposed administrator-intended backend API actions to any authenticated Home Ass...
How severe is CVE-2026-53453?
CVSS scoring is not yet available for CVE-2026-53453. Check NVD for updates.
Is there a patch for CVE-2026-53453?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.